Repository: FHIR/sushi
Pull request #288 (2020-03-17 17:51:44)

Export mapping
This addresses https://standardhealthrecord.atlassian.net/browse/CIMPL-300 by adding exporting of mappings as described here: https://build.fhir.org/ig/HL7/fhir-shorthand/reference.html#defining-mappings.

This completes the functionality that was started in #282. When a `Mapping` is applied to a `Profile` or `Extension`, the `StructureDefinition` itself has data pushed to its `mapping` array element. Each individual element on the SD that is reference by a rule on the `Mapping` also has data pushed to its `mapping` array element.

ngfreiter: > I didn't see a test case for a mapping rule from the structure definition's root element. `* -> Patient` is an example from the FSH documentation. Is this supported?

Yes that is supported, I think for any rule if you do `* {somerule}` without specifying a path, you operate on the root element. Except for CaretValueRules. On CaretValueRules you operate on the StructureDefinition itself. This is overall a bit of a confusing inconsistency that we do need to address at some point. I'll add a test for it though.
ngfreiter: After some discussion, we have decided that mappings need to have a `Title` keyword that maps to `mapping.name` on the StructureDefinition, since the `mapping.name` can be repeated across multiple different profiles. The `Mapping` keyword will still be used to create a globally unique identifier in FSH for the mapping, but the value of the `Mapping` keyword will not actually be used anywhere in the FHIR definition. So if you see this comment before I make that update, be aware that there are changes coming on this PR.

Patch:
diff --git a/antlr/src/main/antlr/FSH.g4 b/antlr/src/main/antlr/FSH.g4
index 4a4cab3..e8275f7 100644
--- a/antlr/src/main/antlr/FSH.g4
+++ b/antlr/src/main/antlr/FSH.g4
@@ -24,7 +24,7 @@ csMetadata:         id | title | description;
 ruleSet:            KW_RULESET SEQUENCE sdRule+;
 
 mapping:            KW_MAPPING SEQUENCE mappingMetadata* mappingRule*;
-mappingMetadata:    id | source | target | description;
+mappingMetadata:    id | source | target | description | title;
 
 // METADATA FIELDS
 parent:             KW_PARENT SEQUENCE;
diff --git a/src/errors/InvalidFHIRIdError.ts b/src/errors/InvalidFHIRIdError.ts
new file mode 100644
index 0000000..6a01e88
--- /dev/null
+++ b/src/errors/InvalidFHIRIdError.ts
@@ -0,0 +1,10 @@
+import { Annotated } from './Annotated';
+
+export class InvalidFHIRIdError extends Error implements Annotated {
+  specReferences = ['https://www.hl7.org/fhir/datatypes.html#id'];
+  constructor(public badId: string) {
+    super(
+      `The string "${badId}" does not represent a valid FHIR id. FHIR ids may contain any combination of upper- or lower-case ASCII letters ('A'..'Z', and 'a'..'z'), numerals ('0'..'9'), '-' and '.', with a length limit of 64 characters.`
+    );
+  }
+}
diff --git a/src/errors/InvalidMappingError.ts b/src/errors/InvalidMappingError.ts
new file mode 100644
index 0000000..d04e1d2
--- /dev/null
+++ b/src/errors/InvalidMappingError.ts
@@ -0,0 +1,12 @@
+import { Annotated } from './Annotated';
+
+export class InvalidMappingError extends Error implements Annotated {
+  specReferences = [
+    'https://www.hl7.org/fhir/elementdefinition-definitions.html#ElementDefinition.mapping'
+  ];
+  constructor() {
+    super(
+      'Invalid mapping, mapping.identity and mapping.map are 1..1 and must be set. Ensure mapping rules specify map: {path} -> {map}'
+    );
+  }
+}
diff --git a/src/errors/index.ts b/src/errors/index.ts
index fdb63f4..58c8d4e 100644
--- a/src/errors/index.ts
+++ b/src/errors/index.ts
@@ -34,3 +34,5 @@ export * from './CurrentPackageLoadError';
 export * from './InvalidUriError';
 export * from './MissingSnapshotError';
 export * from './InvalidUnitsError';
+export * from './InvalidMappingError';
+export * from './InvalidFHIRIdError';
diff --git a/src/export/FHIRExporter.ts b/src/export/FHIRExporter.ts
index 2208bd9..1942927 100644
--- a/src/export/FHIRExporter.ts
+++ b/src/export/FHIRExporter.ts
@@ -4,7 +4,8 @@ import {
   CodeSystemExporter,
   InstanceExporter,
   StructureDefinitionExporter,
-  ValueSetExporter
+  ValueSetExporter,
+  MappingExporter
 } from '.';
 import { MasterFisher } from '../utils';
 /**
@@ -17,6 +18,7 @@ export class FHIRExporter {
   private instanceExporter: InstanceExporter;
   private valueSetExporter: ValueSetExporter;
   private codeSystemExporter: CodeSystemExporter;
+  private mappingExporter: MappingExporter;
   constructor(
     private readonly tank: FSHTank,
     private readonly pkg: Package,
@@ -30,6 +32,7 @@ export class FHIRExporter {
     this.valueSetExporter = new ValueSetExporter(this.tank, this.pkg, this.fisher);
     this.codeSystemExporter = new CodeSystemExporter(this.tank, this.pkg, this.fisher);
     this.instanceExporter = new InstanceExporter(this.tank, this.pkg, this.fisher);
+    this.mappingExporter = new MappingExporter(this.tank, this.pkg, this.fisher);
   }
 
   export(): Package {
@@ -37,6 +40,7 @@ export class FHIRExporter {
     this.valueSetExporter.export();
     this.codeSystemExporter.export();
     this.instanceExporter.export();
+    this.mappingExporter.export();
 
     return this.pkg;
   }
diff --git a/src/export/MappingExporter.ts b/src/export/MappingExporter.ts
new file mode 100644
index 0000000..8b744ee
--- /dev/null
+++ b/src/export/MappingExporter.ts
@@ -0,0 +1,87 @@
+import { FSHTank } from '../import';
+import { Package } from '.';
+import { logger, Type, MasterFisher } from '../utils';
+import { Mapping } from '../fshtypes';
+import { StructureDefinition, idRegex } from '../fhirtypes';
+import { InvalidFHIRIdError } from '../errors';
+
+export class MappingExporter {
+  constructor(
+    private readonly tank: FSHTank,
+    private readonly pkg: Package,
+    private readonly fisher: MasterFisher
+  ) {}
+
+  /**
+   * Sets the mapping on the StructureDefinition
+   * @param {StructureDefinition} structDef - The StructureDefinition to set the mapping on
+   * @param {Mapping} fshDefinition - The Mapping definition
+   * @throws {InvalidFHIRIdError} when the id on the fshDefinition is not valid in FHIR
+   */
+  private setMetadata(structDef: StructureDefinition, fshDefinition: Mapping): void {
+    if (structDef.mapping == null) {
+      structDef.mapping = [];
+    }
+    if (!idRegex.test(fshDefinition.id)) {
+      throw new InvalidFHIRIdError(fshDefinition.id);
+    }
+    structDef.mapping.push({
+      identity: fshDefinition.id,
+      ...(fshDefinition.title && { name: fshDefinition.title }),
+      ...(fshDefinition.target && { uri: fshDefinition.target }),
+      ...(fshDefinition.description && { comment: fshDefinition.description })
+    });
+  }
+
+  /**
+   * Applies mapping rules to the individual ElementDefinitions on the SD
+   * @param {StructureDefinition} structDef - The StructureDefinition to apply rules on
+   * @param {Mapping} fshDefinition - The Mapping definition
+   */
+  private setMappingRules(structDef: StructureDefinition, fshDefinition: Mapping): void {
+    for (const rule of fshDefinition.rules) {
+      const element = structDef.findElementByPath(rule.path, this.fisher);
+      if (element) {
+        try {
+          element.applyMapping(fshDefinition.id, rule.map, rule.comment, rule.language);
+        } catch (e) {
+          logger.error(e.message, rule.sourceInfo);
+        }
+      } else {
+        logger.error(
+          `No element found at path ${rule.path} for ${fshDefinition.name}, skipping rule`,
+          rule.sourceInfo
+        );
+      }
+    }
+  }
+
+  /**
+   * Exports a Mapping by finding the Source StructureDefinition and applying rules
+   * @param {Mapping} fshDefinition - The Mapping definition to apply
+   */
+  exportMapping(fshDefinition: Mapping): void {
+    const sourceStructDef = this.pkg.fish(
+      fshDefinition.source,
+      Type.Profile,
+      Type.Extension
+    ) as StructureDefinition;
+    if (sourceStructDef) {
+      this.setMetadata(sourceStructDef, fshDefinition);
+      this.setMappingRules(sourceStructDef, fshDefinition);
+    } else {
+      logger.error(`Unable to find source "${fshDefinition.source}".`, fshDefinition.sourceInfo);
+    }
+  }
+
+  export(): void {
+    const mappings = this.tank.getAllMappings();
+    for (const mapping of mappings) {
+      try {
+        this.exportMapping(mapping);
+      } catch (e) {
+        logger.error(e.message, mapping.sourceInfo);
+      }
+    }
+  }
+}
diff --git a/src/export/index.ts b/src/export/index.ts
index fa1d8e9..c12ac90 100644
--- a/src/export/index.ts
+++ b/src/export/index.ts
@@ -3,5 +3,6 @@ export * from './StructureDefinitionExporter';
 export * from './InstanceExporter';
 export * from './ValueSetExporter';
 export * from './CodeSystemExporter';
+export * from './MappingExporter';
 export * from './exportFHIR';
 export * from './Package';
diff --git a/src/fhirtypes/ElementDefinition.ts b/src/fhirtypes/ElementDefinition.ts
index 01a48c5..dc68760 100644
--- a/src/fhirtypes/ElementDefinition.ts
+++ b/src/fhirtypes/ElementDefinition.ts
@@ -23,11 +23,14 @@ import {
   InvalidSumOfSliceMinsError,
   InvalidMaxOfSliceError,
   InvalidUriError,
-  InvalidUnitsError
+  InvalidUnitsError,
+  InvalidMappingError,
+  InvalidFHIRIdError
 } from '../errors';
 import { setPropertyOnDefinitionInstance } from './common';
 import { Fishable, Type, Metadata, logger } from '../utils';
 import { InstanceDefinition } from './InstanceDefinition';
+import { idRegex } from './primitiveTypes';
 
 export class ElementDefinitionType {
   private _code: string;
@@ -169,7 +172,7 @@ export class ElementDefinition {
   isModifierReason: string;
   isSummary: boolean;
   binding: ElementDefinitionBinding;
-  mapping: ElementDefinitionMapping;
+  mapping: ElementDefinitionMapping[];
   structDef: StructureDefinition;
   private _original: ElementDefinition;
   private _edStructureDefinition: StructureDefinition;
@@ -1507,6 +1510,31 @@ export class ElementDefinition {
     return types.length === 1;
   }
 
+  /**
+   * Sets mapping on an element
+   * @see {@link https://www.hl7.org/fhir/elementdefinition-definitions.html#ElementDefinition.mapping}
+   * @param {string} identity - value for mapping.identity
+   * @param {string} map - value for mapping.map
+   * @param {string} comment - value for mapping.comment
+   * @param {FshCode} language - language.code is value for mapping.language
+   * @throws {InvalidMappingError} when attempting to set mapping with identity or map undefined
+   * @throws {InvalidFHIRIdError} when setting mapping.identity to an invalid FHIR ID
+   */
+  applyMapping(identity: string, map: string, comment: string, language: FshCode): void {
+    if (identity == null || map == null) {
+      throw new InvalidMappingError();
+    }
+    if (!idRegex.test(identity)) {
+      throw new InvalidFHIRIdError(identity);
+    }
+    this.mapping.push({
+      identity,
+      map,
+      ...(comment && { comment }),
+      ...(language && { language: language.code })
+    });
+  }
+
   /**
    * Finds and returns the parent element.  For example, the parent element of `Foo.bar.one` is the element `Foo.bar`.
    * @returns {ElementDefinition|undefined} the parent element or undefined if this is the root element
diff --git a/src/fshtypes/Mapping.ts b/src/fshtypes/Mapping.ts
index 44e3a0d..bd609f3 100644
--- a/src/fshtypes/Mapping.ts
+++ b/src/fshtypes/Mapping.ts
@@ -9,6 +9,7 @@ export class Mapping extends FshEntity {
   source?: string;
   target?: string;
   description?: string;
+  title?: string;
   rules: MappingRule[];
 
   constructor(public name: string) {
diff --git a/src/import/FSHImporter.ts b/src/import/FSHImporter.ts
index 1bd53bd..25e809b 100644
--- a/src/import/FSHImporter.ts
+++ b/src/import/FSHImporter.ts
@@ -101,6 +101,7 @@ enum MappingMetadataKey {
   Source = 'Source',
   Target = 'Target',
   Description = 'Description',
+  Title = 'Title',
   Unknown = 'Unknown'
 }
 
@@ -571,6 +572,8 @@ export class FSHImporter extends FSHVisitor {
           mapping.target = pair.value;
         } else if (pair.key === MappingMetadataKey.Description) {
           mapping.description = pair.value;
+        } else if (pair.key === MappingMetadataKey.Title) {
+          mapping.title = pair.value;
         }
       });
     ruleCtx.forEach(mappingRule => {
@@ -680,6 +683,8 @@ export class FSHImporter extends FSHVisitor {
         key: MappingMetadataKey.Description,
         value: this.visitDescription(ctx.description())
       };
+    } else if (ctx.title()) {
+      return { key: MappingMetadataKey.Title, value: this.visitTitle(ctx.title()) };
     }
     return { key: MappingMetadataKey.Unknown, value: ctx.getText() };
   }
diff --git a/src/import/FSHTank.ts b/src/import/FSHTank.ts
index b269059..de11529 100644
--- a/src/import/FSHTank.ts
+++ b/src/import/FSHTank.ts
@@ -6,7 +6,8 @@ import {
   FshValueSet,
   FshCodeSystem,
   Invariant,
-  RuleSet
+  RuleSet,
+  Mapping
 } from '../fshtypes';
 import flatMap from 'lodash/flatMap';
 import { Config } from '../fshtypes/Config';
@@ -83,6 +84,14 @@ export class FSHTank implements Fishable {
     return flatMap(this.docs, doc => Array.from(doc.ruleSets.values()));
   }
 
+  /**
+   * Gets all Mappings in the tank
+   * @returns {Mapping[]}
+   */
+  public getAllMappings(): Mapping[] {
+    return flatMap(this.docs, doc => Array.from(doc.mappings.values()));
+  }
+
   /**
    * Finds the alias in the tank, if it exists
    * @param {string} name - The name of the alias we're looking for
@@ -107,6 +116,7 @@ export class FSHTank implements Fishable {
     | Instance
     | Invariant
     | RuleSet
+    | Mapping
     | undefined {
     // Resolve alias if necessary
     item = this.resolveAlias(item) ?? item;
@@ -120,7 +130,8 @@ export class FSHTank implements Fishable {
         Type.CodeSystem,
         Type.Instance,
         Type.Invariant,
-        Type.RuleSet
+        Type.RuleSet,
+        Type.Mapping
       ];
     }
 
@@ -168,6 +179,9 @@ export class FSHTank implements Fishable {
         case Type.RuleSet:
           result = this.getAllRuleSets().find(r => r.name === item);
           break;
+        case Type.Mapping:
+          result = this.getAllMappings().find(m => m.name === item);
+          break;
         case Type.Resource:
         case Type.Type:
         default:
diff --git a/src/import/generated/FSH.interp b/src/import/generated/FSH.interp
index 45d8ce5..f5c9544 100644
--- a/src/import/generated/FSH.interp
+++ b/src/import/generated/FSH.interp
@@ -204,4 +204,4 @@ targetType
 
 
 atn:
-[3, 24715, 42794, 33075, 47597, 16764, 15335, 30598, 22884, 3, 68, 558, 4, 2, 9, 2, 4, 3, 9, 3, 4, 4, 9, 4, 4, 5, 9, 5, 4, 6, 9, 6, 4, 7, 9, 7, 4, 8, 9, 8, 4, 9, 9, 9, 4, 10, 9, 10, 4, 11, 9, 11, 4, 12, 9, 12, 4, 13, 9, 13, 4, 14, 9, 14, 4, 15, 9, 15, 4, 16, 9, 16, 4, 17, 9, 17, 4, 18, 9, 18, 4, 19, 9, 19, 4, 20, 9, 20, 4, 21, 9, 21, 4, 22, 9, 22, 4, 23, 9, 23, 4, 24, 9, 24, 4, 25, 9, 25, 4, 26, 9, 26, 4, 27, 9, 27, 4, 28, 9, 28, 4, 29, 9, 29, 4, 30, 9, 30, 4, 31, 9, 31, 4, 32, 9, 32, 4, 33, 9, 33, 4, 34, 9, 34, 4, 35, 9, 35, 4, 36, 9, 36, 4, 37, 9, 37, 4, 38, 9, 38, 4, 39, 9, 39, 4, 40, 9, 40, 4, 41, 9, 41, 4, 42, 9, 42, 4, 43, 9, 43, 4, 44, 9, 44, 4, 45, 9, 45, 4, 46, 9, 46, 4, 47, 9, 47, 4, 48, 9, 48, 4, 49, 9, 49, 4, 50, 9, 50, 4, 51, 9, 51, 4, 52, 9, 52, 4, 53, 9, 53, 4, 54, 9, 54, 4, 55, 9, 55, 4, 56, 9, 56, 4, 57, 9, 57, 4, 58, 9, 58, 4, 59, 9, 59, 4, 60, 9, 60, 4, 61, 9, 61, 4, 62, 9, 62, 4, 63, 9, 63, 4, 64, 9, 64, 4, 65, 9, 65, 3, 2, 7, 2, 132, 10, 2, 12, 2, 14, 2, 135, 11, 2, 3, 2, 3, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 5, 3, 148, 10, 3, 3, 4, 3, 4, 3, 4, 3, 4, 3, 4, 3, 5, 3, 5, 3, 5, 6, 5, 158, 10, 5, 13, 5, 14, 5, 159, 3, 5, 7, 5, 163, 10, 5, 12, 5, 14, 5, 166, 11, 5, 3, 6, 3, 6, 3, 6, 7, 6, 171, 10, 6, 12, 6, 14, 6, 174, 11, 6, 3, 6, 7, 6, 177, 10, 6, 12, 6, 14, 6, 180, 11, 6, 3, 7, 3, 7, 3, 7, 3, 7, 3, 7, 5, 7, 187, 10, 7, 3, 8, 3, 8, 3, 8, 3, 8, 3, 8, 3, 8, 3, 8, 3, 8, 5, 8, 197, 10, 8, 3, 9, 3, 9, 3, 9, 7, 9, 202, 10, 9, 12, 9, 14, 9, 205, 11, 9, 3, 9, 7, 9, 208, 10, 9, 12, 9, 14, 9, 211, 11, 9, 3, 10, 3, 10, 3, 10, 3, 10, 3, 10, 5, 10, 218, 10, 10, 3, 11, 3, 11, 3, 11, 6, 11, 223, 10, 11, 13, 11, 14, 11, 224, 3, 12, 3, 12, 3, 12, 3, 12, 5, 12, 231, 10, 12, 3, 13, 3, 13, 3, 13, 7, 13, 236, 10, 13, 12, 13, 14, 13, 239, 11, 13, 3, 13, 3, 13, 7, 13, 243, 10, 13, 12, 13, 14, 13, 246, 11, 13, 3, 14, 3, 14, 3, 14, 5, 14, 251, 10, 14, 3, 15, 3, 15, 3, 15, 7, 15, 256, 10, 15, 12, 15, 14, 15, 259, 11, 15, 3, 15, 3, 15, 7, 15, 263, 10, 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51, 2, 418, 417, 3, 2, 2, 2, 418, 419, 3, 2, 2, 2, 419, 420, 3, 2, 2, 2, 420, 421, 7, 50, 2, 2, 421, 423, 7, 51, 2, 2, 422, 424, 7, 51, 2, 2, 423, 422, 3, 2, 2, 2, 423, 424, 3, 2, 2, 2, 424, 426, 3, 2, 2, 2, 425, 427, 7, 55, 2, 2, 426, 425, 3, 2, 2, 2, 426, 427, 3, 2, 2, 2, 427, 79, 3, 2, 2, 2, 428, 430, 7, 47, 2, 2, 429, 431, 7, 40, 2, 2, 430, 429, 3, 2, 2, 2, 430, 431, 3, 2, 2, 2, 431, 434, 3, 2, 2, 2, 432, 435, 5, 82, 42, 2, 433, 435, 5, 84, 43, 2, 434, 432, 3, 2, 2, 2, 434, 433, 3, 2, 2, 2, 435, 81, 3, 2, 2, 2, 436, 438, 5, 114, 58, 2, 437, 439, 5, 86, 44, 2, 438, 437, 3, 2, 2, 2, 438, 439, 3, 2, 2, 2, 439, 443, 3, 2, 2, 2, 440, 441, 7, 63, 2, 2, 441, 443, 5, 86, 44, 2, 442, 436, 3, 2, 2, 2, 442, 440, 3, 2, 2, 2, 443, 83, 3, 2, 2, 2, 444, 445, 7, 41, 2, 2, 445, 448, 5, 86, 44, 2, 446, 447, 7, 42, 2, 2, 447, 449, 5, 92, 47, 2, 448, 446, 3, 2, 2, 2, 448, 449, 3, 2, 2, 2, 449, 85, 3, 2, 2, 2, 450, 461, 7, 27, 2, 2, 451, 454, 5, 88, 45, 2, 452, 453, 7, 34, 2, 2, 453, 455, 5, 90, 46, 2, 454, 452, 3, 2, 2, 2, 454, 455, 3, 2, 2, 2, 455, 462, 3, 2, 2, 2, 456, 459, 5, 90, 46, 2, 457, 458, 7, 34, 2, 2, 458, 460, 5, 88, 45, 2, 459, 457, 3, 2, 2, 2, 459, 460, 3, 2, 2, 2, 460, 462, 3, 2, 2, 2, 461, 451, 3, 2, 2, 2, 461, 456, 3, 2, 2, 2, 462, 87, 3, 2, 2, 2, 463, 464, 7, 44, 2, 2, 464, 465, 7, 65, 2, 2, 465, 89, 3, 2, 2, 2, 466, 467, 7, 43, 2, 2, 467, 468, 9, 3, 2, 2, 468, 91, 3, 2, 2, 2, 469, 470, 5, 94, 48, 2, 470, 471, 7, 34, 2, 2, 471, 473, 3, 2, 2, 2, 472, 469, 3, 2, 2, 2, 473, 476, 3, 2, 2, 2, 474, 472, 3, 2, 2, 2, 474, 475, 3, 2, 2, 2, 475, 477, 3, 2, 2, 2, 476, 474, 3, 2, 2, 2, 477, 478, 5, 94, 48, 2, 478, 93, 3, 2, 2, 2, 479, 480, 7, 65, 2, 2, 480, 482, 5, 96, 49, 2, 481, 483, 5, 98, 50, 2, 482, 481, 3, 2, 2, 2, 482, 483, 3, 2, 2, 2, 483, 95, 3, 2, 2, 2, 484, 485, 9, 4, 2, 2, 485, 97, 3, 2, 2, 2, 486, 492, 5, 114, 58, 2, 487, 492, 7, 38, 2, 2, 488, 492, 7, 39, 2, 2, 489, 492, 7, 62, 2, 2, 490, 492, 7, 51, 2, 2, 491, 486, 3, 2, 2, 2, 491, 487, 3, 2, 2, 2, 491, 488, 3, 2, 2, 2, 491, 489, 3, 2, 2, 2, 491, 490, 3, 2, 2, 2, 492, 99, 3, 2, 2, 2, 493, 494, 7, 65, 2, 2, 494, 101, 3, 2, 2, 2, 495, 496, 7, 64, 2, 2, 496, 103, 3, 2, 2, 2, 497, 498, 7, 61, 2, 2, 498, 105, 3, 2, 2, 2, 499, 500, 9, 5, 2, 2, 500, 107, 3, 2, 2, 2, 501, 502, 9, 6, 2, 2, 502, 109, 3, 2, 2, 2, 503, 515, 7, 65, 2, 2, 504, 515, 7, 51, 2, 2, 505, 515, 7, 52, 2, 2, 506, 515, 7, 53, 2, 2, 507, 515, 7, 57, 2, 2, 508, 515, 7, 58, 2, 2, 509, 515, 5, 122, 62, 2, 510, 515, 5, 114, 58, 2, 511, 515, 5, 118, 60, 2, 512, 515, 5, 120, 61, 2, 513, 515, 5, 126, 64, 2, 514, 503, 3, 2, 2, 2, 514, 504, 3, 2, 2, 2, 514, 505, 3, 2, 2, 2, 514, 506, 3, 2, 2, 2, 514, 507, 3, 2, 2, 2, 514, 508, 3, 2, 2, 2, 514, 509, 3, 2, 2, 2, 514, 510, 3, 2, 2, 2, 514, 511, 3, 2, 2, 2, 514, 512, 3, 2, 2, 2, 514, 513, 3, 2, 2, 2, 515, 111, 3, 2, 2, 2, 516, 519, 7, 65, 2, 2, 517, 518, 7, 33, 2, 2, 518, 520, 7, 65, 2, 2, 519, 517, 3, 2, 2, 2, 519, 520, 3, 2, 2, 2, 520, 521, 3, 2, 2, 2, 521, 525, 7, 59, 2, 2, 522, 524, 5, 106, 54, 2, 523, 522, 3, 2, 2, 2, 524, 527, 3, 2, 2, 2, 525, 523, 3, 2, 2, 2, 525, 526, 3, 2, 2, 2, 526, 113, 3, 2, 2, 2, 527, 525, 3, 2, 2, 2, 528, 530, 7, 55, 2, 2, 529, 531, 7, 51, 2, 2, 530, 529, 3, 2, 2, 2, 530, 531, 3, 2, 2, 2, 531, 115, 3, 2, 2, 2, 532, 533, 7, 47, 2, 2, 533, 535, 5, 114, 58, 2, 534, 536, 7, 51, 2, 2, 535, 534, 3, 2, 2, 2, 535, 536, 3, 2, 2, 2, 536, 117, 3, 2, 2, 2, 537, 538, 7, 53, 2, 2, 538, 539, 7, 54, 2, 2, 539, 119, 3, 2, 2, 2, 540, 541, 5, 124, 63, 2, 541, 542, 7, 48, 2, 2, 542, 543, 5, 124, 63, 2, 543, 121, 3, 2, 2, 2, 544, 546, 7, 60, 2, 2, 545, 547, 7, 51, 2, 2, 546, 545, 3, 2, 2, 2, 546, 547, 3, 2, 2, 2, 547, 123, 3, 2, 2, 2, 548, 551, 7, 53, 2, 2, 549, 551, 5, 118, 60, 2, 550, 548, 3, 2, 2, 2, 550, 549, 3, 2, 2, 2, 551, 125, 3, 2, 2, 2, 552, 553, 9, 7, 2, 2, 553, 127, 3, 2, 2, 2, 554, 557, 7, 65, 2, 2, 555, 557, 5, 122, 62, 2, 556, 554, 3, 2, 2, 2, 556, 555, 3, 2, 2, 2, 557, 129, 3, 2, 2, 2, 60, 133, 147, 159, 164, 172, 178, 186, 196, 203, 209, 217, 224, 230, 237, 242, 244, 250, 257, 262, 264, 270, 277, 284, 290, 298, 342, 348, 353, 358, 363, 368, 381, 392, 397, 405, 410, 418, 423, 426, 430, 434, 438, 442, 448, 454, 459, 461, 474, 482, 491, 514, 519, 525, 530, 535, 546, 550, 556]
\ No newline at end of file
diff --git a/src/import/generated/FSHParser.js b/src/import/generated/FSHParser.js
index 0f0e0e9..e41eeee 100644
--- a/src/import/generated/FSHParser.js
+++ b/src/import/generated/FSHParser.js
@@ -8,7 +8,7 @@ var grammarFileName = "FSH.g4";
 
 
 var serializedATN = ["\u0003\u608b\ua72a\u8133\ub9ed\u417c\u3be7\u7786\u5964",
-    "\u0003D\u022e\u0004\u0002\t\u0002\u0004\u0003\t\u0003\u0004\u0004\t",
+    "\u0003D\u022f\u0004\u0002\t\u0002\u0004\u0003\t\u0003\u0004\u0004\t",
     "\u0004\u0004\u0005\t\u0005\u0004\u0006\t\u0006\u0004\u0007\t\u0007\u0004",
     "\b\t\b\u0004\t\t\t\u0004\n\t\n\u0004\u000b\t\u000b\u0004\f\t\f\u0004",
     "\r\t\r\u0004\u000e\t\u000e\u0004\u000f\t\u000f\u0004\u0010\t\u0010\u0004",
@@ -47,325 +47,326 @@ var serializedATN = ["\u0003\u608b\ua72a\u8133\ub9ed\u417c\u3be7\u7786\u5964",
     "\u0006\u0011\u0114\n\u0011\r\u0011\u000e\u0011\u0115\u0003\u0012\u0003",
     "\u0012\u0003\u0012\u0007\u0012\u011b\n\u0012\f\u0012\u000e\u0012\u011e",
     "\u000b\u0012\u0003\u0012\u0007\u0012\u0121\n\u0012\f\u0012\u000e\u0012",
-    "\u0124\u000b\u0012\u0003\u0013\u0003\u0013\u0003\u0013\u0003\u0013\u0005",
-    "\u0013\u012a\n\u0013\u0003\u0014\u0003\u0014\u0003\u0014\u0003\u0015",
-    "\u0003\u0015\u0003\u0015\u0003\u0016\u0003\u0016\u0003\u0016\u0003\u0017",
-    "\u0003\u0017\u0003\u0017\u0003\u0018\u0003\u0018\u0003\u0018\u0003\u0019",
-    "\u0003\u0019\u0003\u0019\u0003\u001a\u0003\u001a\u0003\u001a\u0003\u001b",
-    "\u0003\u001b\u0003\u001b\u0003\u001c\u0003\u001c\u0003\u001c\u0003\u001d",
-    "\u0003\u001d\u0003\u001d\u0003\u001e\u0003\u001e\u0003\u001e\u0003\u001f",
-    "\u0003\u001f\u0003\u001f\u0003 \u0003 \u0003 \u0003 \u0007 \u0154\n",
-    " \f \u000e \u0157\u000b \u0003!\u0003!\u0003!\u0005!\u015c\n!\u0003",
-    "!\u0006!\u015f\n!\r!\u000e!\u0160\u0003\"\u0003\"\u0003\"\u0005\"\u0166",
-    "\n\"\u0003\"\u0003\"\u0003\"\u0005\"\u016b\n\"\u0003#\u0003#\u0003#",
-    "\u0005#\u0170\n#\u0003#\u0003#\u0003#\u0003$\u0003$\u0003$\u0003$\u0003",
-    "$\u0003$\u0007$\u017b\n$\f$\u000e$\u017e\u000b$\u0003%\u0003%\u0003",
-    "%\u0003%\u0003%\u0003%\u0007%\u0186\n%\f%\u000e%\u0189\u000b%\u0003",
-    "&\u0003&\u0005&\u018d\n&\u0003&\u0003&\u0003&\u0003&\u0007&\u0193\n",
-    "&\f&\u000e&\u0196\u000b&\u0003\'\u0003\'\u0005\'\u019a\n\'\u0003\'\u0003",
-    "\'\u0003\'\u0003\'\u0003(\u0003(\u0005(\u01a2\n(\u0003(\u0003(\u0003",
-    "(\u0005(\u01a7\n(\u0003(\u0005(\u01aa\n(\u0003)\u0003)\u0005)\u01ae",
-    "\n)\u0003)\u0003)\u0005)\u01b2\n)\u0003*\u0003*\u0005*\u01b6\n*\u0003",
-    "*\u0003*\u0005*\u01ba\n*\u0003+\u0003+\u0003+\u0003+\u0005+\u01c0\n",
-    "+\u0003,\u0003,\u0003,\u0003,\u0005,\u01c6\n,\u0003,\u0003,\u0003,\u0005",
-    ",\u01cb\n,\u0005,\u01cd\n,\u0003-\u0003-\u0003-\u0003.\u0003.\u0003",
-    ".\u0003/\u0003/\u0003/\u0007/\u01d8\n/\f/\u000e/\u01db\u000b/\u0003",
-    "/\u0003/\u00030\u00030\u00030\u00050\u01e2\n0\u00031\u00031\u00032\u0003",
-    "2\u00032\u00032\u00032\u00052\u01eb\n2\u00033\u00033\u00034\u00034\u0003",
-    "5\u00035\u00036\u00036\u00037\u00037\u00038\u00038\u00038\u00038\u0003",
-    "8\u00038\u00038\u00038\u00038\u00038\u00038\u00058\u0202\n8\u00039\u0003",
-    "9\u00039\u00059\u0207\n9\u00039\u00039\u00079\u020b\n9\f9\u000e9\u020e",
-    "\u000b9\u0003:\u0003:\u0005:\u0212\n:\u0003;\u0003;\u0003;\u0005;\u0217",
-    "\n;\u0003<\u0003<\u0003<\u0003=\u0003=\u0003=\u0003=\u0003>\u0003>\u0005",
-    ">\u0222\n>\u0003?\u0003?\u0005?\u0226\n?\u0003@\u0003@\u0003A\u0003",
-    "A\u0005A\u022c\nA\u0003A\u0002\u0002B\u0002\u0004\u0006\b\n\f\u000e",
-    "\u0010\u0012\u0014\u0016\u0018\u001a\u001c\u001e \"$&(*,.02468:<>@B",
-    "DFHJLNPRTVXZ\\^`bdfhjlnprtvxz|~\u0080\u0002\b\u0003\u000234\u0003\u0002",
-    "@A\u0004\u0002..AA\u0003\u0002\u0018\u001a\u0003\u0002\u001c\u001f\u0003",
-    "\u0002&\'\u0002\u024c\u0002\u0085\u0003\u0002\u0002\u0002\u0004\u0093",
-    "\u0003\u0002\u0002\u0002\u0006\u0095\u0003\u0002\u0002\u0002\b\u009a",
-    "\u0003\u0002\u0002\u0002\n\u00a7\u0003\u0002\u0002\u0002\f\u00ba\u0003",
-    "\u0002\u0002\u0002\u000e\u00c4\u0003\u0002\u0002\u0002\u0010\u00c6\u0003",
-    "\u0002\u0002\u0002\u0012\u00d9\u0003\u0002\u0002\u0002\u0014\u00db\u0003",
-    "\u0002\u0002\u0002\u0016\u00e6\u0003\u0002\u0002\u0002\u0018\u00e8\u0003",
-    "\u0002\u0002\u0002\u001a\u00fa\u0003\u0002\u0002\u0002\u001c\u00fc\u0003",
-    "\u0002\u0002\u0002\u001e\u010e\u0003\u0002\u0002\u0002 \u0110\u0003",
-    "\u0002\u0002\u0002\"\u0117\u0003\u0002\u0002\u0002$\u0129\u0003\u0002",
-    "\u0002\u0002&\u012b\u0003\u0002\u0002\u0002(\u012e\u0003\u0002\u0002",
-    "\u0002*\u0131\u0003\u0002\u0002\u0002,\u0134\u0003\u0002\u0002\u0002",
-    ".\u0137\u0003\u0002\u0002\u00020\u013a\u0003\u0002\u0002\u00022\u013d",
-    "\u0003\u0002\u0002\u00024\u0140\u0003\u0002\u0002\u00026\u0143\u0003",
-    "\u0002\u0002\u00028\u0146\u0003\u0002\u0002\u0002:\u0149\u0003\u0002",
-    "\u0002\u0002<\u014c\u0003\u0002\u0002\u0002>\u014f\u0003\u0002\u0002",
-    "\u0002@\u0158\u0003\u0002\u0002\u0002B\u0162\u0003\u0002\u0002\u0002",
-    "D\u016c\u0003\u0002\u0002\u0002F\u0174\u0003\u0002\u0002\u0002H\u017f",
-    "\u0003\u0002\u0002\u0002J\u018a\u0003\u0002\u0002\u0002L\u0197\u0003",
-    "\u0002\u0002\u0002N\u019f\u0003\u0002\u0002\u0002P\u01ab\u0003\u0002",
-    "\u0002\u0002R\u01b9\u0003\u0002\u0002\u0002T\u01bb\u0003\u0002\u0002",
-    "\u0002V\u01c1\u0003\u0002\u0002\u0002X\u01ce\u0003\u0002\u0002\u0002",
-    "Z\u01d1\u0003\u0002\u0002\u0002\\\u01d9\u0003\u0002\u0002\u0002^\u01de",
-    "\u0003\u0002\u0002\u0002`\u01e3\u0003\u0002\u0002\u0002b\u01ea\u0003",
-    "\u0002\u0002\u0002d\u01ec\u0003\u0002\u0002\u0002f\u01ee\u0003\u0002",
-    "\u0002\u0002h\u01f0\u0003\u0002\u0002\u0002j\u01f2\u0003\u0002\u0002",
-    "\u0002l\u01f4\u0003\u0002\u0002\u0002n\u0201\u0003\u0002\u0002\u0002",
-    "p\u0203\u0003\u0002\u0002\u0002r\u020f\u0003\u0002\u0002\u0002t\u0213",
-    "\u0003\u0002\u0002\u0002v\u0218\u0003\u0002\u0002\u0002x\u021b\u0003",
-    "\u0002\u0002\u0002z\u021f\u0003\u0002\u0002\u0002|\u0225\u0003\u0002",
-    "\u0002\u0002~\u0227\u0003\u0002\u0002\u0002\u0080\u022b\u0003\u0002",
-    "\u0002\u0002\u0082\u0084\u0005\u0004\u0003\u0002\u0083\u0082\u0003\u0002",
-    "\u0002\u0002\u0084\u0087\u0003\u0002\u0002\u0002\u0085\u0083\u0003\u0002",
-    "\u0002\u0002\u0085\u0086\u0003\u0002\u0002\u0002\u0086\u0088\u0003\u0002",
-    "\u0002\u0002\u0087\u0085\u0003\u0002\u0002\u0002\u0088\u0089\u0007\u0002",
-    "\u0002\u0003\u0089\u0003\u0003\u0002\u0002\u0002\u008a\u0094\u0005\u0006",
-    "\u0004\u0002\u008b\u0094\u0005\b\u0005\u0002\u008c\u0094\u0005\n\u0006",
-    "\u0002\u008d\u0094\u0005\u0014\u000b\u0002\u008e\u0094\u0005\u0010\t",
-    "\u0002\u008f\u0094\u0005\u0018\r\u0002\u0090\u0094\u0005\u001c\u000f",
-    "\u0002\u0091\u0094\u0005 \u0011\u0002\u0092\u0094\u0005\"\u0012\u0002",
-    "\u0093\u008a\u0003\u0002\u0002\u0002\u0093\u008b\u0003\u0002\u0002\u0002",
-    "\u0093\u008c\u0003\u0002\u0002\u0002\u0093\u008d\u0003\u0002\u0002\u0002",
-    "\u0093\u008e\u0003\u0002\u0002\u0002\u0093\u008f\u0003\u0002\u0002\u0002",
-    "\u0093\u0090\u0003\u0002\u0002\u0002\u0093\u0091\u0003\u0002\u0002\u0002",
-    "\u0093\u0092\u0003\u0002\u0002\u0002\u0094\u0005\u0003\u0002\u0002\u0002",
-    "\u0095\u0096\u0007\u0003\u0002\u0002\u0096\u0097\u0007A\u0002\u0002",
-    "\u0097\u0098\u0007.\u0002\u0002\u0098\u0099\u0007A\u0002\u0002\u0099",
-    "\u0007\u0003\u0002\u0002\u0002\u009a\u009b\u0007\u0004\u0002\u0002\u009b",
-    "\u009d\u0007A\u0002\u0002\u009c\u009e\u0005\f\u0007\u0002\u009d\u009c",
-    "\u0003\u0002\u0002\u0002\u009e\u009f\u0003\u0002\u0002\u0002\u009f\u009d",
-    "\u0003\u0002\u0002\u0002\u009f\u00a0\u0003\u0002\u0002\u0002\u00a0\u00a4",
-    "\u0003\u0002\u0002\u0002\u00a1\u00a3\u0005\u000e\b\u0002\u00a2\u00a1",
-    "\u0003\u0002\u0002\u0002\u00a3\u00a6\u0003\u0002\u0002\u0002\u00a4\u00a2",
-    "\u0003\u0002\u0002\u0002\u00a4\u00a5\u0003\u0002\u0002\u0002\u00a5\t",
-    "\u0003\u0002\u0002\u0002\u00a6\u00a4\u0003\u0002\u0002\u0002\u00a7\u00a8",
-    "\u0007\u0005\u0002\u0002\u00a8\u00ac\u0007A\u0002\u0002\u00a9\u00ab",
-    "\u0005\f\u0007\u0002\u00aa\u00a9\u0003\u0002\u0002\u0002\u00ab\u00ae",
-    "\u0003\u0002\u0002\u0002\u00ac\u00aa\u0003\u0002\u0002\u0002\u00ac\u00ad",
-    "\u0003\u0002\u0002\u0002\u00ad\u00b2\u0003\u0002\u0002\u0002\u00ae\u00ac",
-    "\u0003\u0002\u0002\u0002\u00af\u00b1\u0005\u000e\b\u0002\u00b0\u00af",
-    "\u0003\u0002\u0002\u0002\u00b1\u00b4\u0003\u0002\u0002\u0002\u00b2\u00b0",
-    "\u0003\u0002\u0002\u0002\u00b2\u00b3\u0003\u0002\u0002\u0002\u00b3\u000b",
-    "\u0003\u0002\u0002\u0002\u00b4\u00b2\u0003\u0002\u0002\u0002\u00b5\u00bb",
-    "\u0005&\u0014\u0002\u00b6\u00bb\u0005(\u0015\u0002\u00b7\u00bb\u0005",
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-    "\u0002\u0002\u0002\u0225\u0224\u0003\u0002\u0002\u0002\u0226}\u0003",
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-    "\u0002\u0002\u0002\u0229\u022c\u0007A\u0002\u0002\u022a\u022c\u0005",
-    "z>\u0002\u022b\u0229\u0003\u0002\u0002\u0002\u022b\u022a\u0003\u0002",
-    "\u0002\u0002\u022c\u0081\u0003\u0002\u0002\u0002<\u0085\u0093\u009f",
-    "\u00a4\u00ac\u00b2\u00ba\u00c4\u00cb\u00d1\u00d9\u00e0\u00e6\u00ed\u00f2",
-    "\u00f4\u00fa\u0101\u0106\u0108\u010e\u0115\u011c\u0122\u0129\u0155\u015b",
-    "\u0160\u0165\u016a\u016f\u017c\u0187\u018c\u0194\u0199\u01a1\u01a6\u01a9",
-    "\u01ad\u01b1\u01b5\u01b9\u01bf\u01c5\u01ca\u01cc\u01d9\u01e1\u01ea\u0201",
-    "\u0206\u020c\u0211\u0216\u0221\u0225\u022b"].join("");
+    "\u0124\u000b\u0012\u0003\u0013\u0003\u0013\u0003\u0013\u0003\u0013\u0003",
+    "\u0013\u0005\u0013\u012b\n\u0013\u0003\u0014\u0003\u0014\u0003\u0014",
+    "\u0003\u0015\u0003\u0015\u0003\u0015\u0003\u0016\u0003\u0016\u0003\u0016",
+    "\u0003\u0017\u0003\u0017\u0003\u0017\u0003\u0018\u0003\u0018\u0003\u0018",
+    "\u0003\u0019\u0003\u0019\u0003\u0019\u0003\u001a\u0003\u001a\u0003\u001a",
+    "\u0003\u001b\u0003\u001b\u0003\u001b\u0003\u001c\u0003\u001c\u0003\u001c",
+    "\u0003\u001d\u0003\u001d\u0003\u001d\u0003\u001e\u0003\u001e\u0003\u001e",
+    "\u0003\u001f\u0003\u001f\u0003\u001f\u0003 \u0003 \u0003 \u0003 \u0007",
+    " \u0155\n \f \u000e \u0158\u000b \u0003!\u0003!\u0003!\u0005!\u015d",
+    "\n!\u0003!\u0006!\u0160\n!\r!\u000e!\u0161\u0003\"\u0003\"\u0003\"\u0005",
+    "\"\u0167\n\"\u0003\"\u0003\"\u0003\"\u0005\"\u016c\n\"\u0003#\u0003",
+    "#\u0003#\u0005#\u0171\n#\u0003#\u0003#\u0003#\u0003$\u0003$\u0003$\u0003",
+    "$\u0003$\u0003$\u0007$\u017c\n$\f$\u000e$\u017f\u000b$\u0003%\u0003",
+    "%\u0003%\u0003%\u0003%\u0003%\u0007%\u0187\n%\f%\u000e%\u018a\u000b",
+    "%\u0003&\u0003&\u0005&\u018e\n&\u0003&\u0003&\u0003&\u0003&\u0007&\u0194",
+    "\n&\f&\u000e&\u0197\u000b&\u0003\'\u0003\'\u0005\'\u019b\n\'\u0003\'",
+    "\u0003\'\u0003\'\u0003\'\u0003(\u0003(\u0005(\u01a3\n(\u0003(\u0003",
+    "(\u0003(\u0005(\u01a8\n(\u0003(\u0005(\u01ab\n(\u0003)\u0003)\u0005",
+    ")\u01af\n)\u0003)\u0003)\u0005)\u01b3\n)\u0003*\u0003*\u0005*\u01b7",
+    "\n*\u0003*\u0003*\u0005*\u01bb\n*\u0003+\u0003+\u0003+\u0003+\u0005",
+    "+\u01c1\n+\u0003,\u0003,\u0003,\u0003,\u0005,\u01c7\n,\u0003,\u0003",
+    ",\u0003,\u0005,\u01cc\n,\u0005,\u01ce\n,\u0003-\u0003-\u0003-\u0003",
+    ".\u0003.\u0003.\u0003/\u0003/\u0003/\u0007/\u01d9\n/\f/\u000e/\u01dc",
+    "\u000b/\u0003/\u0003/\u00030\u00030\u00030\u00050\u01e3\n0\u00031\u0003",
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+    "4\u00034\u00035\u00035\u00036\u00036\u00037\u00037\u00038\u00038\u0003",
+    "8\u00038\u00038\u00038\u00038\u00038\u00038\u00038\u00038\u00058\u0203",
+    "\n8\u00039\u00039\u00039\u00059\u0208\n9\u00039\u00039\u00079\u020c",
+    "\n9\f9\u000e9\u020f\u000b9\u0003:\u0003:\u0005:\u0213\n:\u0003;\u0003",
+    ";\u0003;\u0005;\u0218\n;\u0003<\u0003<\u0003<\u0003=\u0003=\u0003=\u0003",
+    "=\u0003>\u0003>\u0005>\u0223\n>\u0003?\u0003?\u0005?\u0227\n?\u0003",
+    "@\u0003@\u0003A\u0003A\u0005A\u022d\nA\u0003A\u0002\u0002B\u0002\u0004",
+    "\u0006\b\n\f\u000e\u0010\u0012\u0014\u0016\u0018\u001a\u001c\u001e ",
+    "\"$&(*,.02468:<>@BDFHJLNPRTVXZ\\^`bdfhjlnprtvxz|~\u0080\u0002\b\u0003",
+    "\u000234\u0003\u0002@A\u0004\u0002..AA\u0003\u0002\u0018\u001a\u0003",
+    "\u0002\u001c\u001f\u0003\u0002&\'\u0002\u024e\u0002\u0085\u0003\u0002",
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+    "\u0002 \u0110\u0003\u0002\u0002\u0002\"\u0117\u0003\u0002\u0002\u0002",
+    "$\u012a\u0003\u0002\u0002\u0002&\u012c\u0003\u0002\u0002\u0002(\u012f",
+    "\u0003\u0002\u0002\u0002*\u0132\u0003\u0002\u0002\u0002,\u0135\u0003",
+    "\u0002\u0002\u0002.\u0138\u0003\u0002\u0002\u00020\u013b\u0003\u0002",
+    "\u0002\u00022\u013e\u0003\u0002\u0002\u00024\u0141\u0003\u0002\u0002",
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+    "\u0003\u0002\u0002\u0002V\u01c2\u0003\u0002\u0002\u0002X\u01cf\u0003",
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+    "\u0002x\u021c\u0003\u0002\u0002\u0002z\u0220\u0003\u0002\u0002\u0002",
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+    "\u0005\u001c\u000f\u0002\u0091\u0094\u0005 \u0011\u0002\u0092\u0094",
+    "\u0005\"\u0012\u0002\u0093\u008a\u0003\u0002\u0002\u0002\u0093\u008b",
+    "\u0003\u0002\u0002\u0002\u0093\u008c\u0003\u0002\u0002\u0002\u0093\u008d",
+    "\u0003\u0002\u0002\u0002\u0093\u008e\u0003\u0002\u0002\u0002\u0093\u008f",
+    "\u0003\u0002\u0002\u0002\u0093\u0090\u0003\u0002\u0002\u0002\u0093\u0091",
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+    "\u0007A\u0002\u0002\u0097\u0098\u0007.\u0002\u0002\u0098\u0099\u0007",
+    "A\u0002\u0002\u0099\u0007\u0003\u0002\u0002\u0002\u009a\u009b\u0007",
+    "\u0004\u0002\u0002\u009b\u009d\u0007A\u0002\u0002\u009c\u009e\u0005",
+    "\f\u0007\u0002\u009d\u009c\u0003\u0002\u0002\u0002\u009e\u009f\u0003",
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+    "\u0002\u0002\u0002\u00a0\u00a4\u0003\u0002\u0002\u0002\u00a1\u00a3\u0005",
+    "\u000e\b\u0002\u00a2\u00a1\u0003\u0002\u0002\u0002\u00a3\u00a6\u0003",
+    "\u0002\u0002\u0002\u00a4\u00a2\u0003\u0002\u0002\u0002\u00a4\u00a5\u0003",
+    "\u0002\u0002\u0002\u00a5\t\u0003\u0002\u0002\u0002\u00a6\u00a4\u0003",
+    "\u0002\u0002\u0002\u00a7\u00a8\u0007\u0005\u0002\u0002\u00a8\u00ac\u0007",
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+    "\u0002\u0002\u00ab\u00ae\u0003\u0002\u0002\u0002\u00ac\u00aa\u0003\u0002",
+    "\u0002\u0002\u00ac\u00ad\u0003\u0002\u0002\u0002\u00ad\u00b2\u0003\u0002",
+    "\u0002\u0002\u00ae\u00ac\u0003\u0002\u0002\u0002\u00af\u00b1\u0005\u000e",
+    "\b\u0002\u00b0\u00af\u0003\u0002\u0002\u0002\u00b1\u00b4\u0003\u0002",
+    "\u0002\u0002\u00b2\u00b0\u0003\u0002\u0002\u0002\u00b2\u00b3\u0003\u0002",
+    "\u0002\u0002\u00b3\u000b\u0003\u0002\u0002\u0002\u00b4\u00b2\u0003\u0002",
+    "\u0002\u0002\u00b5\u00bb\u0005&\u0014\u0002\u00b6\u00bb\u0005(\u0015",
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+    "\u00b9\u00bb\u00058\u001d\u0002\u00ba\u00b5\u0003\u0002\u0002\u0002",
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+    "\u00ba\u00b8\u0003\u0002\u0002\u0002\u00ba\u00b9\u0003\u0002\u0002\u0002",
+    "\u00bb\r\u0003\u0002\u0002\u0002\u00bc\u00c5\u0005> \u0002\u00bd\u00c5",
+    "\u0005@!\u0002\u00be\u00c5\u0005B\"\u0002\u00bf\u00c5\u0005D#\u0002",
+    "\u00c0\u00c5\u0005F$\u0002\u00c1\u00c5\u0005H%\u0002\u00c2\u00c5\u0005",
+    "J&\u0002\u00c3\u00c5\u0005L\'\u0002\u00c4\u00bc\u0003\u0002\u0002\u0002",
+    "\u00c4\u00bd\u0003\u0002\u0002\u0002\u00c4\u00be\u0003\u0002\u0002\u0002",
+    "\u00c4\u00bf\u0003\u0002\u0002\u0002\u00c4\u00c0\u0003\u0002\u0002\u0002",
+    "\u00c4\u00c1\u0003\u0002\u0002\u0002\u00c4\u00c2\u0003\u0002\u0002\u0002",
+    "\u00c4\u00c3\u0003\u0002\u0002\u0002\u00c5\u000f\u0003\u0002\u0002\u0002",
+    "\u00c6\u00c7\u0007\u0006\u0002\u0002\u00c7\u00cb\u0007A\u0002\u0002",
+    "\u00c8\u00ca\u0005\u0012\n\u0002\u00c9\u00c8\u0003\u0002\u0002\u0002",
+    "\u00ca\u00cd\u0003\u0002\u0002\u0002\u00cb\u00c9\u0003\u0002\u0002\u0002",
+    "\u00cb\u00cc\u0003\u0002\u0002\u0002\u00cc\u00d1\u0003\u0002\u0002\u0002",
+    "\u00cd\u00cb\u0003\u0002\u0002\u0002\u00ce\u00d0\u0005D#\u0002\u00cf",
+    "\u00ce\u0003\u0002\u0002\u0002\u00d0\u00d3\u0003\u0002\u0002\u0002\u00d1",
+    "\u00cf\u0003\u0002\u0002\u0002\u00d1\u00d2\u0003\u0002\u0002\u0002\u00d2",
+    "\u0011\u0003\u0002\u0002\u0002\u00d3\u00d1\u0003\u0002\u0002\u0002\u00d4",
+    "\u00da\u00054\u001b\u0002\u00d5\u00da\u0005*\u0016\u0002\u00d6\u00da",
+    "\u0005,\u0017\u0002\u00d7\u00da\u00056\u001c\u0002\u00d8\u00da\u0005",
+    "8\u001d\u0002\u00d9\u00d4\u0003\u0002\u0002\u0002\u00d9\u00d5\u0003",
+    "\u0002\u0002\u0002\u00d9\u00d6\u0003\u0002\u0002\u0002\u00d9\u00d7\u0003",
+    "\u0002\u0002\u0002\u00d9\u00d8\u0003\u0002\u0002\u0002\u00da\u0013\u0003",
+    "\u0002\u0002\u0002\u00db\u00dc\u0007\b\u0002\u0002\u00dc\u00de\u0007",
+    "A\u0002\u0002\u00dd\u00df\u0005\u0016\f\u0002\u00de\u00dd\u0003\u0002",
+    "\u0002\u0002\u00df\u00e0\u0003\u0002\u0002\u0002\u00e0\u00de\u0003\u0002",
+    "\u0002\u0002\u00e0\u00e1\u0003\u0002\u0002\u0002\u00e1\u0015\u0003\u0002",
+    "\u0002\u0002\u00e2\u00e7\u0005,\u0017\u0002\u00e3\u00e7\u0005.\u0018",
+    "\u0002\u00e4\u00e7\u00050\u0019\u0002\u00e5\u00e7\u00052\u001a\u0002",
+    "\u00e6\u00e2\u0003\u0002\u0002\u0002\u00e6\u00e3\u0003\u0002\u0002\u0002",
+    "\u00e6\u00e4\u0003\u0002\u0002\u0002\u00e6\u00e5\u0003\u0002\u0002\u0002",
+    "\u00e7\u0017\u0003\u0002\u0002\u0002\u00e8\u00e9\u0007\t\u0002\u0002",
+    "\u00e9\u00ed\u0007A\u0002\u0002\u00ea\u00ec\u0005\u001a\u000e\u0002",
+    "\u00eb\u00ea\u0003\u0002\u0002\u0002\u00ec\u00ef\u0003\u0002\u0002\u0002",
+    "\u00ed\u00eb\u0003\u0002\u0002\u0002\u00ed\u00ee\u0003\u0002\u0002\u0002",
+    "\u00ee\u00f4\u0003\u0002\u0002\u0002\u00ef\u00ed\u0003\u0002\u0002\u0002",
+    "\u00f0\u00f3\u0005L\'\u0002\u00f1\u00f3\u0005P)\u0002\u00f2\u00f0\u0003",
+    "\u0002\u0002\u0002\u00f2\u00f1\u0003\u0002\u0002\u0002\u00f3\u00f6\u0003",
+    "\u0002\u0002\u0002\u00f4\u00f2\u0003\u0002\u0002\u0002\u00f4\u00f5\u0003",
+    "\u0002\u0002\u0002\u00f5\u0019\u0003\u0002\u0002\u0002\u00f6\u00f4\u0003",
+    "\u0002\u0002\u0002\u00f7\u00fb\u0005(\u0015\u0002\u00f8\u00fb\u0005",
+    "*\u0016\u0002\u00f9\u00fb\u0005,\u0017\u0002\u00fa\u00f7\u0003\u0002",
+    "\u0002\u0002\u00fa\u00f8\u0003\u0002\u0002\u0002\u00fa\u00f9\u0003\u0002",
+    "\u0002\u0002\u00fb\u001b\u0003\u0002\u0002\u0002\u00fc\u00fd\u0007\n",
+    "\u0002\u0002\u00fd\u0101\u0007A\u0002\u0002\u00fe\u0100\u0005\u001e",
+    "\u0010\u0002\u00ff\u00fe\u0003\u0002\u0002\u0002\u0100\u0103\u0003\u0002",
+    "\u0002\u0002\u0101\u00ff\u0003\u0002\u0002\u0002\u0101\u0102\u0003\u0002",
+    "\u0002\u0002\u0102\u0108\u0003\u0002\u0002\u0002\u0103\u0101\u0003\u0002",
+    "\u0002\u0002\u0104\u0107\u0005L\'\u0002\u0105\u0107\u0005t;\u0002\u0106",
+    "\u0104\u0003\u0002\u0002\u0002\u0106\u0105\u0003\u0002\u0002\u0002\u0107",
+    "\u010a\u0003\u0002\u0002\u0002\u0108\u0106\u0003\u0002\u0002\u0002\u0108",
+    "\u0109\u0003\u0002\u0002\u0002\u0109\u001d\u0003\u0002\u0002\u0002\u010a",
+    "\u0108\u0003\u0002\u0002\u0002\u010b\u010f\u0005(\u0015\u0002\u010c",
+    "\u010f\u0005*\u0016\u0002\u010d\u010f\u0005,\u0017\u0002\u010e\u010b",
+    "\u0003\u0002\u0002\u0002\u010e\u010c\u0003\u0002\u0002\u0002\u010e\u010d",
+    "\u0003\u0002\u0002\u0002\u010f\u001f\u0003\u0002\u0002\u0002\u0110\u0111",
+    "\u0007\u000b\u0002\u0002\u0111\u0113\u0007A\u0002\u0002\u0112\u0114",
+    "\u0005\u000e\b\u0002\u0113\u0112\u0003\u0002\u0002\u0002\u0114\u0115",
+    "\u0003\u0002\u0002\u0002\u0115\u0113\u0003\u0002\u0002\u0002\u0115\u0116",
+    "\u0003\u0002\u0002\u0002\u0116!\u0003\u0002\u0002\u0002\u0117\u0118",
+    "\u0007\f\u0002\u0002\u0118\u011c\u0007A\u0002\u0002\u0119\u011b\u0005",
+    "$\u0013\u0002\u011a\u0119\u0003\u0002\u0002\u0002\u011b\u011e\u0003",
+    "\u0002\u0002\u0002\u011c\u011a\u0003\u0002\u0002\u0002\u011c\u011d\u0003",
+    "\u0002\u0002\u0002\u011d\u0122\u0003\u0002\u0002\u0002\u011e\u011c\u0003",
+    "\u0002\u0002\u0002\u011f\u0121\u0005N(\u0002\u0120\u011f\u0003\u0002",
+    "\u0002\u0002\u0121\u0124\u0003\u0002\u0002\u0002\u0122\u0120\u0003\u0002",
+    "\u0002\u0002\u0122\u0123\u0003\u0002\u0002\u0002\u0123#\u0003\u0002",
+    "\u0002\u0002\u0124\u0122\u0003\u0002\u0002\u0002\u0125\u012b\u0005(",
+    "\u0015\u0002\u0126\u012b\u0005:\u001e\u0002\u0127\u012b\u0005<\u001f",
+    "\u0002\u0128\u012b\u0005,\u0017\u0002\u0129\u012b\u0005*\u0016\u0002",
+    "\u012a\u0125\u0003\u0002\u0002\u0002\u012a\u0126\u0003\u0002\u0002\u0002",
+    "\u012a\u0127\u0003\u0002\u0002\u0002\u012a\u0128\u0003\u0002\u0002\u0002",
+    "\u012a\u0129\u0003\u0002\u0002\u0002\u012b%\u0003\u0002\u0002\u0002",
+    "\u012c\u012d\u0007\u000e\u0002\u0002\u012d\u012e\u0007A\u0002\u0002",
+    "\u012e\'\u0003\u0002\u0002\u0002\u012f\u0130\u0007\u000f\u0002\u0002",
+    "\u0130\u0131\u0007A\u0002\u0002\u0131)\u0003\u0002\u0002\u0002\u0132",
+    "\u0133\u0007\u0010\u0002\u0002\u0133\u0134\u00073\u0002\u0002\u0134",
+    "+\u0003\u0002\u0002\u0002\u0135\u0136\u0007\u0011\u0002\u0002\u0136",
+    "\u0137\t\u0002\u0002\u0002\u0137-\u0003\u0002\u0002\u0002\u0138\u0139",
+    "\u0007\u0012\u0002\u0002\u0139\u013a\u00073\u0002\u0002\u013a/\u0003",
+    "\u0002\u0002\u0002\u013b\u013c\u0007\u0013\u0002\u0002\u013c\u013d\u0007",
+    "3\u0002\u0002\u013d1\u0003\u0002\u0002\u0002\u013e\u013f\u0007\u0014",
+    "\u0002\u0002\u013f\u0140\u00077\u0002\u0002\u01403\u0003\u0002\u0002",
+    "\u0002\u0141\u0142\u0007\u0007\u0002\u0002\u0142\u0143\u0007A\u0002",
+    "\u0002\u01435\u0003\u0002\u0002\u0002\u0144\u0145\u0007\u0015\u0002",
+    "\u0002\u0145\u0146\u0007A\u0002\u0002\u01467\u0003\u0002\u0002\u0002",
+    "\u0147\u0148\u0007\r\u0002\u0002\u0148\u0149\t\u0003\u0002\u0002\u0149",
+    "9\u0003\u0002\u0002\u0002\u014a\u014b\u0007\u0016\u0002\u0002\u014b",
+    "\u014c\u0007A\u0002\u0002\u014c;\u0003\u0002\u0002\u0002\u014d\u014e",
+    "\u0007\u0017\u0002\u0002\u014e\u014f\u00073\u0002\u0002\u014f=\u0003",
+    "\u0002\u0002\u0002\u0150\u0151\u0007/\u0002\u0002\u0151\u0152\u0005",
+    "d3\u0002\u0152\u0156\u0007;\u0002\u0002\u0153\u0155\u0005j6\u0002\u0154",
+    "\u0153\u0003\u0002\u0002\u0002\u0155\u0158\u0003\u0002\u0002\u0002\u0156",
+    "\u0154\u0003\u0002\u0002\u0002\u0156\u0157\u0003\u0002\u0002\u0002\u0157",
+    "?\u0003\u0002\u0002\u0002\u0158\u0156\u0003\u0002\u0002\u0002\u0159",
+    "\u015c\u0007/\u0002\u0002\u015a\u015d\u0005d3\u0002\u015b\u015d\u0005",
+    "f4\u0002\u015c\u015a\u0003\u0002\u0002\u0002\u015c\u015b\u0003\u0002",
+    "\u0002\u0002\u015d\u015f\u0003\u0002\u0002\u0002\u015e\u0160\u0005j",
+    "6\u0002\u015f\u015e\u0003\u0002\u0002\u0002\u0160\u0161\u0003\u0002",
+    "\u0002\u0002\u0161\u015f\u0003\u0002\u0002\u0002\u0161\u0162\u0003\u0002",
+    "\u0002\u0002\u0162A\u0003\u0002\u0002\u0002\u0163\u0164\u0007/\u0002",
+    "\u0002\u0164\u0166\u0005d3\u0002\u0165\u0167\u0007-\u0002\u0002\u0166",
+    "\u0165\u0003\u0002\u0002\u0002\u0166\u0167\u0003\u0002\u0002\u0002\u0167",
+    "\u0168\u0003\u0002\u0002\u0002\u0168\u0169\u0007\u001b\u0002\u0002\u0169",
+    "\u016b\u0007A\u0002\u0002\u016a\u016c\u0005l7\u0002\u016b\u016a\u0003",
+    "\u0002\u0002\u0002\u016b\u016c\u0003\u0002\u0002\u0002\u016cC\u0003",
+    "\u0002\u0002\u0002\u016d\u016e\u0007/\u0002\u0002\u016e\u0170\u0005",
+    "d3\u0002\u016f\u0171\u0007-\u0002\u0002\u0170\u016f\u0003\u0002\u0002",
+    "\u0002\u0170\u0171\u0003\u0002\u0002\u0002\u0171\u0172\u0003\u0002\u0002",
+    "\u0002\u0172\u0173\u0007.\u0002\u0002\u0173\u0174\u0005n8\u0002\u0174",
+    "E\u0003\u0002\u0002\u0002\u0175\u0176\u0007/\u0002\u0002\u0176\u0177",
+    "\u0005d3\u0002\u0177\u0178\u0007 \u0002\u0002\u0178\u017d\u0005p9\u0002",
+    "\u0179\u017a\u0007\"\u0002\u0002\u017a\u017c\u0005p9\u0002\u017b\u0179",
+    "\u0003\u0002\u0002\u0002\u017c\u017f\u0003\u0002\u0002\u0002\u017d\u017b",
+    "\u0003\u0002\u0002\u0002\u017d\u017e\u0003\u0002\u0002\u0002\u017eG",
+    "\u0003\u0002\u0002\u0002\u017f\u017d\u0003\u0002\u0002\u0002\u0180\u0181",
+    "\u0007/\u0002\u0002\u0181\u0182\u0005d3\u0002\u0182\u0183\u0007#\u0002",
+    "\u0002\u0183\u0188\u0005\u0080A\u0002\u0184\u0185\u0007$\u0002\u0002",
+    "\u0185\u0187\u0005\u0080A\u0002\u0186\u0184\u0003\u0002\u0002\u0002",
+    "\u0187\u018a\u0003\u0002\u0002\u0002\u0188\u0186\u0003\u0002\u0002\u0002",
+    "\u0188\u0189\u0003\u0002\u0002\u0002\u0189I\u0003\u0002\u0002\u0002",
+    "\u018a\u0188\u0003\u0002\u0002\u0002\u018b\u018d\u0007/\u0002\u0002",
+    "\u018c\u018e\u0005d3\u0002\u018d\u018c\u0003\u0002\u0002\u0002\u018d",
+    "\u018e\u0003\u0002\u0002\u0002\u018e\u018f\u0003\u0002\u0002\u0002\u018f",
+    "\u0190\u0007%\u0002\u0002\u0190\u0195\u0007A\u0002\u0002\u0191\u0192",
+    "\u0007\"\u0002\u0002\u0192\u0194\u0007A\u0002\u0002\u0193\u0191\u0003",
+    "\u0002\u0002\u0002\u0194\u0197\u0003\u0002\u0002\u0002\u0195\u0193\u0003",
+    "\u0002\u0002\u0002\u0195\u0196\u0003\u0002\u0002\u0002\u0196K\u0003",
+    "\u0002\u0002\u0002\u0197\u0195\u0003\u0002\u0002\u0002\u0198\u019a\u0007",
+    "/\u0002\u0002\u0199\u019b\u0005d3\u0002\u019a\u0199\u0003\u0002\u0002",
+    "\u0002\u019a\u019b\u0003\u0002\u0002\u0002\u019b\u019c\u0003\u0002\u0002",
+    "\u0002\u019c\u019d\u0005h5\u0002\u019d\u019e\u0007.\u0002\u0002\u019e",
+    "\u019f\u0005n8\u0002\u019fM\u0003\u0002\u0002\u0002\u01a0\u01a2\u0007",
+    "/\u0002\u0002\u01a1\u01a3\u0005d3\u0002\u01a2\u01a1\u0003\u0002\u0002",
+    "\u0002\u01a2\u01a3\u0003\u0002\u0002\u0002\u01a3\u01a4\u0003\u0002\u0002",
+    "\u0002\u01a4\u01a5\u00072\u0002\u0002\u01a5\u01a7\u00073\u0002\u0002",
+    "\u01a6\u01a8\u00073\u0002\u0002\u01a7\u01a6\u0003\u0002\u0002\u0002",
+    "\u01a7\u01a8\u0003\u0002\u0002\u0002\u01a8\u01aa\u0003\u0002\u0002\u0002",
+    "\u01a9\u01ab\u00077\u0002\u0002\u01aa\u01a9\u0003\u0002\u0002\u0002",
+    "\u01aa\u01ab\u0003\u0002\u0002\u0002\u01abO\u0003\u0002\u0002\u0002",
+    "\u01ac\u01ae\u0007/\u0002\u0002\u01ad\u01af\u0007(\u0002\u0002\u01ae",
+    "\u01ad\u0003\u0002\u0002\u0002\u01ae\u01af\u0003\u0002\u0002\u0002\u01af",
+    "\u01b2\u0003\u0002\u0002\u0002\u01b0\u01b3\u0005R*\u0002\u01b1\u01b3",
+    "\u0005T+\u0002\u01b2\u01b0\u0003\u0002\u0002\u0002\u01b2\u01b1\u0003",
+    "\u0002\u0002\u0002\u01b3Q\u0003\u0002\u0002\u0002\u01b4\u01b6\u0005",
+    "r:\u0002\u01b5\u01b7\u0005V,\u0002\u01b6\u01b5\u0003\u0002\u0002\u0002",
+    "\u01b6\u01b7\u0003\u0002\u0002\u0002\u01b7\u01bb\u0003\u0002\u0002\u0002",
+    "\u01b8\u01b9\u0007?\u0002\u0002\u01b9\u01bb\u0005V,\u0002\u01ba\u01b4",
+    "\u0003\u0002\u0002\u0002\u01ba\u01b8\u0003\u0002\u0002\u0002\u01bbS",
+    "\u0003\u0002\u0002\u0002\u01bc\u01bd\u0007)\u0002\u0002\u01bd\u01c0",
+    "\u0005V,\u0002\u01be\u01bf\u0007*\u0002\u0002\u01bf\u01c1\u0005\\/\u0002",
+    "\u01c0\u01be\u0003\u0002\u0002\u0002\u01c0\u01c1\u0003\u0002\u0002\u0002",
+    "\u01c1U\u0003\u0002\u0002\u0002\u01c2\u01cd\u0007\u001b\u0002\u0002",
+    "\u01c3\u01c6\u0005X-\u0002\u01c4\u01c5\u0007\"\u0002\u0002\u01c5\u01c7",
+    "\u0005Z.\u0002\u01c6\u01c4\u0003\u0002\u0002\u0002\u01c6\u01c7\u0003",
+    "\u0002\u0002\u0002\u01c7\u01ce\u0003\u0002\u0002\u0002\u01c8\u01cb\u0005",
+    "Z.\u0002\u01c9\u01ca\u0007\"\u0002\u0002\u01ca\u01cc\u0005X-\u0002\u01cb",
+    "\u01c9\u0003\u0002\u0002\u0002\u01cb\u01cc\u0003\u0002\u0002\u0002\u01cc",
+    "\u01ce\u0003\u0002\u0002\u0002\u01cd\u01c3\u0003\u0002\u0002\u0002\u01cd",
+    "\u01c8\u0003\u0002\u0002\u0002\u01ceW\u0003\u0002\u0002\u0002\u01cf",
+    "\u01d0\u0007,\u0002\u0002\u01d0\u01d1\u0007A\u0002\u0002\u01d1Y\u0003",
+    "\u0002\u0002\u0002\u01d2\u01d3\u0007+\u0002\u0002\u01d3\u01d4\t\u0003",
+    "\u0002\u0002\u01d4[\u0003\u0002\u0002\u0002\u01d5\u01d6\u0005^0\u0002",
+    "\u01d6\u01d7\u0007\"\u0002\u0002\u01d7\u01d9\u0003\u0002\u0002\u0002",
+    "\u01d8\u01d5\u0003\u0002\u0002\u0002\u01d9\u01dc\u0003\u0002\u0002\u0002",
+    "\u01da\u01d8\u0003\u0002\u0002\u0002\u01da\u01db\u0003\u0002\u0002\u0002",
+    "\u01db\u01dd\u0003\u0002\u0002\u0002\u01dc\u01da\u0003\u0002\u0002\u0002",
+    "\u01dd\u01de\u0005^0\u0002\u01de]\u0003\u0002\u0002\u0002\u01df\u01e0",
+    "\u0007A\u0002\u0002\u01e0\u01e2\u0005`1\u0002\u01e1\u01e3\u0005b2\u0002",
+    "\u01e2\u01e1\u0003\u0002\u0002\u0002\u01e2\u01e3\u0003\u0002\u0002\u0002",
+    "\u01e3_\u0003\u0002\u0002\u0002\u01e4\u01e5\t\u0004\u0002\u0002\u01e5",
+    "a\u0003\u0002\u0002\u0002\u01e6\u01ec\u0005r:\u0002\u01e7\u01ec\u0007",
+    "&\u0002\u0002\u01e8\u01ec\u0007\'\u0002\u0002\u01e9\u01ec\u0007>\u0002",
+    "\u0002\u01ea\u01ec\u00073\u0002\u0002\u01eb\u01e6\u0003\u0002\u0002",
+    "\u0002\u01eb\u01e7\u0003\u0002\u0002\u0002\u01eb\u01e8\u0003\u0002\u0002",
+    "\u0002\u01eb\u01e9\u0003\u0002\u0002\u0002\u01eb\u01ea\u0003\u0002\u0002",
+    "\u0002\u01ecc\u0003\u0002\u0002\u0002\u01ed\u01ee\u0007A\u0002\u0002",
+    "\u01eee\u0003\u0002\u0002\u0002\u01ef\u01f0\u0007@\u0002\u0002\u01f0",
+    "g\u0003\u0002\u0002\u0002\u01f1\u01f2\u0007=\u0002\u0002\u01f2i\u0003",
+    "\u0002\u0002\u0002\u01f3\u01f4\t\u0005\u0002\u0002\u01f4k\u0003\u0002",
+    "\u0002\u0002\u01f5\u01f6\t\u0006\u0002\u0002\u01f6m\u0003\u0002\u0002",
+    "\u0002\u01f7\u0203\u0007A\u0002\u0002\u01f8\u0203\u00073\u0002\u0002",
+    "\u01f9\u0203\u00074\u0002\u0002\u01fa\u0203\u00075\u0002\u0002\u01fb",
+    "\u0203\u00079\u0002\u0002\u01fc\u0203\u0007:\u0002\u0002\u01fd\u0203",
+    "\u0005z>\u0002\u01fe\u0203\u0005r:\u0002\u01ff\u0203\u0005v<\u0002\u0200",
+    "\u0203\u0005x=\u0002\u0201\u0203\u0005~@\u0002\u0202\u01f7\u0003\u0002",
+    "\u0002\u0002\u0202\u01f8\u0003\u0002\u0002\u0002\u0202\u01f9\u0003\u0002",
+    "\u0002\u0002\u0202\u01fa\u0003\u0002\u0002\u0002\u0202\u01fb\u0003\u0002",
+    "\u0002\u0002\u0202\u01fc\u0003\u0002\u0002\u0002\u0202\u01fd\u0003\u0002",
+    "\u0002\u0002\u0202\u01fe\u0003\u0002\u0002\u0002\u0202\u01ff\u0003\u0002",
+    "\u0002\u0002\u0202\u0200\u0003\u0002\u0002\u0002\u0202\u0201\u0003\u0002",
+    "\u0002\u0002\u0203o\u0003\u0002\u0002\u0002\u0204\u0207\u0007A\u0002",
+    "\u0002\u0205\u0206\u0007!\u0002\u0002\u0206\u0208\u0007A\u0002\u0002",
+    "\u0207\u0205\u0003\u0002\u0002\u0002\u0207\u0208\u0003\u0002\u0002\u0002",
+    "\u0208\u0209\u0003\u0002\u0002\u0002\u0209\u020d\u0007;\u0002\u0002",
+    "\u020a\u020c\u0005j6\u0002\u020b\u020a\u0003\u0002\u0002\u0002\u020c",
+    "\u020f\u0003\u0002\u0002\u0002\u020d\u020b\u0003\u0002\u0002\u0002\u020d",
+    "\u020e\u0003\u0002\u0002\u0002\u020eq\u0003\u0002\u0002\u0002\u020f",
+    "\u020d\u0003\u0002\u0002\u0002\u0210\u0212\u00077\u0002\u0002\u0211",
+    "\u0213\u00073\u0002\u0002\u0212\u0211\u0003\u0002\u0002\u0002\u0212",
+    "\u0213\u0003\u0002\u0002\u0002\u0213s\u0003\u0002\u0002\u0002\u0214",
+    "\u0215\u0007/\u0002\u0002\u0215\u0217\u0005r:\u0002\u0216\u0218\u0007",
+    "3\u0002\u0002\u0217\u0216\u0003\u0002\u0002\u0002\u0217\u0218\u0003",
+    "\u0002\u0002\u0002\u0218u\u0003\u0002\u0002\u0002\u0219\u021a\u0007",
+    "5\u0002\u0002\u021a\u021b\u00076\u0002\u0002\u021bw\u0003\u0002\u0002",
+    "\u0002\u021c\u021d\u0005|?\u0002\u021d\u021e\u00070\u0002\u0002\u021e",
+    "\u021f\u0005|?\u0002\u021fy\u0003\u0002\u0002\u0002\u0220\u0222\u0007",
+    "<\u0002\u0002\u0221\u0223\u00073\u0002\u0002\u0222\u0221\u0003\u0002",
+    "\u0002\u0002\u0222\u0223\u0003\u0002\u0002\u0002\u0223{\u0003\u0002",
+    "\u0002\u0002\u0224\u0227\u00075\u0002\u0002\u0225\u0227\u0005v<\u0002",
+    "\u0226\u0224\u0003\u0002\u0002\u0002\u0226\u0225\u0003\u0002\u0002\u0002",
+    "\u0227}\u0003\u0002\u0002\u0002\u0228\u0229\t\u0007\u0002\u0002\u0229",
+    "\u007f\u0003\u0002\u0002\u0002\u022a\u022d\u0007A\u0002\u0002\u022b",
+    "\u022d\u0005z>\u0002\u022c\u022a\u0003\u0002\u0002\u0002\u022c\u022b",
+    "\u0003\u0002\u0002\u0002\u022d\u0081\u0003\u0002\u0002\u0002<\u0085",
+    "\u0093\u009f\u00a4\u00ac\u00b2\u00ba\u00c4\u00cb\u00d1\u00d9\u00e0\u00e6",
+    "\u00ed\u00f2\u00f4\u00fa\u0101\u0106\u0108\u010e\u0115\u011c\u0122\u012a",
+    "\u0156\u015c\u0161\u0166\u016b\u0170\u017d\u0188\u018d\u0195\u019a\u01a2",
+    "\u01a7\u01aa\u01ae\u01b2\u01b6\u01ba\u01c0\u01c6\u01cb\u01cd\u01da\u01e2",
+    "\u01eb\u0202\u0207\u020d\u0212\u0217\u0222\u0226\u022c"].join("");
 
 
 var atn = new antlr4.atn.ATNDeserializer().deserialize(serializedATN);
@@ -2465,7 +2466,7 @@ FSHParser.prototype.mapping = function() {
         this.state = 282;
         this._errHandler.sync(this);
         _la = this._input.LA(1);
-        while((((_la) & ~0x1f) == 0 && ((1 << _la) & ((1 << FSHParser.KW_ID) | (1 << FSHParser.KW_DESCRIPTION) | (1 << FSHParser.KW_SOURCE) | (1 << FSHParser.KW_TARGET))) !== 0)) {
+        while((((_la) & ~0x1f) == 0 && ((1 << _la) & ((1 << FSHParser.KW_ID) | (1 << FSHParser.KW_TITLE) | (1 << FSHParser.KW_DESCRIPTION) | (1 << FSHParser.KW_SOURCE) | (1 << FSHParser.KW_TARGET))) !== 0)) {
             this.state = 279;
             this.mappingMetadata();
             this.state = 284;
@@ -2529,6 +2530,10 @@ MappingMetadataContext.prototype.description = function() {
     return this.getTypedRuleContext(DescriptionContext,0);
 };
 
+MappingMetadataContext.prototype.title = function() {
+    return this.getTypedRuleContext(TitleContext,0);
+};
+
 MappingMetadataContext.prototype.enterRule = function(listener) {
     if(listener instanceof FSHListener ) {
         listener.enterMappingMetadata(this);
@@ -2559,7 +2564,7 @@ FSHParser.prototype.mappingMetadata = function() {
     var localctx = new MappingMetadataContext(this, this._ctx, this.state);
     this.enterRule(localctx, 34, FSHParser.RULE_mappingMetadata);
     try {
-        this.state = 295;
+        this.state = 296;
         this._errHandler.sync(this);
         switch(this._input.LA(1)) {
         case FSHParser.KW_ID:
@@ -2582,6 +2587,11 @@ FSHParser.prototype.mappingMetadata = function() {
             this.state = 294;
             this.description();
             break;
+        case FSHParser.KW_TITLE:
+            this.enterOuterAlt(localctx, 5);
+            this.state = 295;
+            this.title();
+            break;
         default:
             throw new antlr4.error.NoViableAltException(this);
         }
@@ -2655,9 +2665,9 @@ FSHParser.prototype.parent = function() {
     this.enterRule(localctx, 36, FSHParser.RULE_parent);
     try {
         this.enterOuterAlt(localctx, 1);
-        this.state = 297;
-        this.match(FSHParser.KW_PARENT);
         this.state = 298;
+        this.match(FSHParser.KW_PARENT);
+        this.state = 299;
         this.match(FSHParser.SEQUENCE);
     } catch (re) {
     	if(re instanceof antlr4.error.RecognitionException) {
@@ -2729,9 +2739,9 @@ FSHParser.prototype.id = function() {
     this.enterRule(localctx, 38, FSHParser.RULE_id);
     try {
         this.enterOuterAlt(localctx, 1);
-        this.state = 300;
-        this.match(FSHParser.KW_ID);
         this.state = 301;
+        this.match(FSHParser.KW_ID);
+        this.state = 302;
         this.match(FSHParser.SEQUENCE);
     } catch (re) {
     	if(re instanceof antlr4.error.RecognitionException) {
@@ -2803,9 +2813,9 @@ FSHParser.prototype.title = function() {
     this.enterRule(localctx, 40, FSHParser.RULE_title);
     try {
         this.enterOuterAlt(localctx, 1);
-        this.state = 303;
-        this.match(FSHParser.KW_TITLE);
         this.state = 304;
+        this.match(FSHParser.KW_TITLE);
+        this.state = 305;
         this.match(FSHParser.STRING);
     } catch (re) {
     	if(re instanceof antlr4.error.RecognitionException) {
@@ -2882,9 +2892,9 @@ FSHParser.prototype.description = function() {
     var _la = 0; // Token type
     try {
         this.enterOuterAlt(localctx, 1);
-        this.state = 306;
-        this.match(FSHParser.KW_DESCRIPTION);
         this.state = 307;
+        this.match(FSHParser.KW_DESCRIPTION);
+        this.state = 308;
         _la = this._input.LA(1);
         if(!(_la===FSHParser.STRING || _la===FSHParser.MULTILINE_STRING)) {
         this._errHandler.recoverInline(this);
@@ -2963,9 +2973,9 @@ FSHParser.prototype.expression = function() {
     this.enterRule(localctx, 44, FSHParser.RULE_expression);
     try {
         this.enterOuterAlt(localctx, 1);
-        this.state = 309;
-        this.match(FSHParser.KW_EXPRESSION);
         this.state = 310;
+        this.match(FSHParser.KW_EXPRESSION);
+        this.state = 311;
         this.match(FSHParser.STRING);
     } catch (re) {
     	if(re instanceof antlr4.error.RecognitionException) {
@@ -3037,9 +3047,9 @@ FSHParser.prototype.xpath = function() {
     this.enterRule(localctx, 46, FSHParser.RULE_xpath);
     try {
         this.enterOuterAlt(localctx, 1);
-        this.state = 312;
-        this.match(FSHParser.KW_XPATH);
         this.state = 313;
+        this.match(FSHParser.KW_XPATH);
+        this.state = 314;
         this.match(FSHParser.STRING);
     } catch (re) {
     	if(re instanceof antlr4.error.RecognitionException) {
@@ -3111,9 +3121,9 @@ FSHParser.prototype.severity = function() {
     this.enterRule(localctx, 48, FSHParser.RULE_severity);
     try {
         this.enterOuterAlt(localctx, 1);
-        this.state = 315;
-        this.match(FSHParser.KW_SEVERITY);
         this.state = 316;
+        this.match(FSHParser.KW_SEVERITY);
+        this.state = 317;
         this.match(FSHParser.CODE);
     } catch (re) {
     	if(re instanceof antlr4.error.RecognitionException) {
@@ -3185,9 +3195,9 @@ FSHParser.prototype.instanceOf = function() {
     this.enterRule(localctx, 50, FSHParser.RULE_instanceOf);
     try {
         this.enterOuterAlt(localctx, 1);
-        this.state = 318;
-        this.match(FSHParser.KW_INSTANCEOF);
         this.state = 319;
+        this.match(FSHParser.KW_INSTANCEOF);
+        this.state = 320;
         this.match(FSHParser.SEQUENCE);
     } catch (re) {
     	if(re instanceof antlr4.error.RecognitionException) {
@@ -3259,9 +3269,9 @@ FSHParser.prototype.usage = function() {
     this.enterRule(localctx, 52, FSHParser.RULE_usage);
     try {
         this.enterOuterAlt(localctx, 1);
-        this.state = 321;
-        this.match(FSHParser.KW_USAGE);
         this.state = 322;
+        this.match(FSHParser.KW_USAGE);
+        this.state = 323;
         this.match(FSHParser.SEQUENCE);
     } catch (re) {
     	if(re instanceof antlr4.error.RecognitionException) {
@@ -3338,9 +3348,9 @@ FSHParser.prototype.mixins = function() {
     var _la = 0; // Token type
     try {
         this.enterOuterAlt(localctx, 1);
-        this.state = 324;
-        this.match(FSHParser.KW_MIXINS);
         this.state = 325;
+        this.match(FSHParser.KW_MIXINS);
+        this.state = 326;
         _la = this._input.LA(1);
         if(!(_la===FSHParser.COMMA_DELIMITED_SEQUENCES || _la===FSHParser.SEQUENCE)) {
         this._errHandler.recoverInline(this);
@@ -3419,9 +3429,9 @@ FSHParser.prototype.source = function() {
     this.enterRule(localctx, 56, FSHParser.RULE_source);
     try {
         this.enterOuterAlt(localctx, 1);
-        this.state = 327;
-        this.match(FSHParser.KW_SOURCE);
         this.state = 328;
+        this.match(FSHParser.KW_SOURCE);
+        this.state = 329;
         this.match(FSHParser.SEQUENCE);
     } catch (re) {
     	if(re instanceof antlr4.error.RecognitionException) {
@@ -3493,9 +3503,9 @@ FSHParser.prototype.target = function() {
     this.enterRule(localctx, 58, FSHParser.RULE_target);
     try {
         this.enterOuterAlt(localctx, 1);
-        this.state = 330;
-        this.match(FSHParser.KW_TARGET);
         this.state = 331;
+        this.match(FSHParser.KW_TARGET);
+        this.state = 332;
         this.match(FSHParser.STRING);
     } catch (re) {
     	if(re instanceof antlr4.error.RecognitionException) {
@@ -3583,19 +3593,19 @@ FSHParser.prototype.cardRule = function() {
     var _la = 0; // Token type
     try {
         this.enterOuterAlt(localctx, 1);
-        this.state = 333;
-        this.match(FSHParser.STAR);
         this.state = 334;
-        this.path();
+        this.match(FSHParser.STAR);
         this.state = 335;
+        this.path();
+        this.state = 336;
         this.match(FSHParser.CARD);
-        this.state = 339;
+        this.state = 340;
         this._errHandler.sync(this);
         _la = this._input.LA(1);
         while((((_la) & ~0x1f) == 0 && ((1 << _la) & ((1 << FSHParser.KW_MOD) | (1 << FSHParser.KW_MS) | (1 << FSHParser.KW_SU))) !== 0)) {
-            this.state = 336;
+            this.state = 337;
             this.flag();
-            this.state = 341;
+            this.state = 342;
             this._errHandler.sync(this);
             _la = this._input.LA(1);
         }
@@ -3685,29 +3695,29 @@ FSHParser.prototype.flagRule = function() {
     var _la = 0; // Token type
     try {
         this.enterOuterAlt(localctx, 1);
-        this.state = 342;
+        this.state = 343;
         this.match(FSHParser.STAR);
-        this.state = 345;
+        this.state = 346;
         this._errHandler.sync(this);
         switch(this._input.LA(1)) {
         case FSHParser.SEQUENCE:
-            this.state = 343;
+            this.state = 344;
             this.path();
             break;
         case FSHParser.COMMA_DELIMITED_SEQUENCES:
-            this.state = 344;
+            this.state = 345;
             this.paths();
             break;
         default:
             throw new antlr4.error.NoViableAltException(this);
         }
-        this.state = 348; 
+        this.state = 349; 
         this._errHandler.sync(this);
         _la = this._input.LA(1);
         do {
-            this.state = 347;
+            this.state = 348;
             this.flag();
-            this.state = 350; 
+            this.state = 351; 
             this._errHandler.sync(this);
             _la = this._input.LA(1);
         } while((((_la) & ~0x1f) == 0 && ((1 << _la) & ((1 << FSHParser.KW_MOD) | (1 << FSHParser.KW_MS) | (1 << FSHParser.KW_SU))) !== 0));
@@ -3798,27 +3808,27 @@ FSHParser.prototype.valueSetRule = function() {
     var _la = 0; // Token type
     try {
         this.enterOuterAlt(localctx, 1);
-        this.state = 352;
-        this.match(FSHParser.STAR);
         this.state = 353;
+        this.match(FSHParser.STAR);
+        this.state = 354;
         this.path();
-        this.state = 355;
+        this.state = 356;
         this._errHandler.sync(this);
         _la = this._input.LA(1);
         if(_la===FSHParser.KW_UNITS) {
-            this.state = 354;
+            this.state = 355;
             this.match(FSHParser.KW_UNITS);
         }
 
-        this.state = 357;
-        this.match(FSHParser.KW_FROM);
         this.state = 358;
+        this.match(FSHParser.KW_FROM);
+        this.state = 359;
         this.match(FSHParser.SEQUENCE);
-        this.state = 360;
+        this.state = 361;
         this._errHandler.sync(this);
         _la = this._input.LA(1);
         if((((_la) & ~0x1f) == 0 && ((1 << _la) & ((1 << FSHParser.KW_EXAMPLE) | (1 << FSHParser.KW_PREFERRED) | (1 << FSHParser.KW_EXTENSIBLE) | (1 << FSHParser.KW_REQUIRED))) !== 0)) {
-            this.state = 359;
+            this.state = 360;
             this.strength();
         }
 
@@ -3905,21 +3915,21 @@ FSHParser.prototype.fixedValueRule = function() {
     var _la = 0; // Token type
     try {
         this.enterOuterAlt(localctx, 1);
-        this.state = 362;
-        this.match(FSHParser.STAR);
         this.state = 363;
+        this.match(FSHParser.STAR);
+        this.state = 364;
         this.path();
-        this.state = 365;
+        this.state = 366;
         this._errHandler.sync(this);
         _la = this._input.LA(1);
         if(_la===FSHParser.KW_UNITS) {
-            this.state = 364;
+            this.state = 365;
             this.match(FSHParser.KW_UNITS);
         }
 
-        this.state = 367;
-        this.match(FSHParser.EQUAL);
         this.state = 368;
+        this.match(FSHParser.EQUAL);
+        this.state = 369;
         this.value();
     } catch (re) {
     	if(re instanceof antlr4.error.RecognitionException) {
@@ -4019,23 +4029,23 @@ FSHParser.prototype.containsRule = function() {
     var _la = 0; // Token type
     try {
         this.enterOuterAlt(localctx, 1);
-        this.state = 370;
-        this.match(FSHParser.STAR);
         this.state = 371;
-        this.path();
+        this.match(FSHParser.STAR);
         this.state = 372;
-        this.match(FSHParser.KW_CONTAINS);
+        this.path();
         this.state = 373;
+        this.match(FSHParser.KW_CONTAINS);
+        this.state = 374;
         this.item();
-        this.state = 378;
+        this.state = 379;
         this._errHandler.sync(this);
         _la = this._input.LA(1);
         while(_la===FSHParser.KW_AND) {
-            this.state = 374;
-            this.match(FSHParser.KW_AND);
             this.state = 375;
+            this.match(FSHParser.KW_AND);
+            this.state = 376;
             this.item();
-            this.state = 380;
+            this.state = 381;
             this._errHandler.sync(this);
             _la = this._input.LA(1);
         }
@@ -4137,23 +4147,23 @@ FSHParser.prototype.onlyRule = function() {
     var _la = 0; // Token type
     try {
         this.enterOuterAlt(localctx, 1);
-        this.state = 381;
-        this.match(FSHParser.STAR);
         this.state = 382;
-        this.path();
+        this.match(FSHParser.STAR);
         this.state = 383;
-        this.match(FSHParser.KW_ONLY);
+        this.path();
         this.state = 384;
+        this.match(FSHParser.KW_ONLY);
+        this.state = 385;
         this.targetType();
-        this.state = 389;
+        this.state = 390;
         this._errHandler.sync(this);
         _la = this._input.LA(1);
         while(_la===FSHParser.KW_OR) {
-            this.state = 385;
-            this.match(FSHParser.KW_OR);
             this.state = 386;
+            this.match(FSHParser.KW_OR);
+            this.state = 387;
             this.targetType();
-            this.state = 391;
+            this.state = 392;
             this._errHandler.sync(this);
             _la = this._input.LA(1);
         }
@@ -4256,29 +4266,29 @@ FSHParser.prototype.obeysRule = function() {
     var _la = 0; // Token type
     try {
         this.enterOuterAlt(localctx, 1);
-        this.state = 392;
+        this.state = 393;
         this.match(FSHParser.STAR);
-        this.state = 394;
+        this.state = 395;
         this._errHandler.sync(this);
         _la = this._input.LA(1);
         if(_la===FSHParser.SEQUENCE) {
-            this.state = 393;
+            this.state = 394;
             this.path();
         }
 
-        this.state = 396;
-        this.match(FSHParser.KW_OBEYS);
         this.state = 397;
+        this.match(FSHParser.KW_OBEYS);
+        this.state = 398;
         this.match(FSHParser.SEQUENCE);
-        this.state = 402;
+        this.state = 403;
         this._errHandler.sync(this);
         _la = this._input.LA(1);
         while(_la===FSHParser.KW_AND) {
-            this.state = 398;
-            this.match(FSHParser.KW_AND);
             this.state = 399;
+            this.match(FSHParser.KW_AND);
+            this.state = 400;
             this.match(FSHParser.SEQUENCE);
-            this.state = 404;
+            this.state = 405;
             this._errHandler.sync(this);
             _la = this._input.LA(1);
         }
@@ -4365,21 +4375,21 @@ FSHParser.prototype.caretValueRule = function() {
     var _la = 0; // Token type
     try {
         this.enterOuterAlt(localctx, 1);
-        this.state = 405;
+        this.state = 406;
         this.match(FSHParser.STAR);
-        this.state = 407;
+        this.state = 408;
         this._errHandler.sync(this);
         _la = this._input.LA(1);
         if(_la===FSHParser.SEQUENCE) {
-            this.state = 406;
+            this.state = 407;
             this.path();
         }
 
-        this.state = 409;
-        this.caretPath();
         this.state = 410;
-        this.match(FSHParser.EQUAL);
+        this.caretPath();
         this.state = 411;
+        this.match(FSHParser.EQUAL);
+        this.state = 412;
         this.value();
     } catch (re) {
     	if(re instanceof antlr4.error.RecognitionException) {
@@ -4472,33 +4482,33 @@ FSHParser.prototype.mappingRule = function() {
     var _la = 0; // Token type
     try {
         this.enterOuterAlt(localctx, 1);
-        this.state = 413;
+        this.state = 414;
         this.match(FSHParser.STAR);
-        this.state = 415;
+        this.state = 416;
         this._errHandler.sync(this);
         _la = this._input.LA(1);
         if(_la===FSHParser.SEQUENCE) {
-            this.state = 414;
+            this.state = 415;
             this.path();
         }
 
-        this.state = 417;
-        this.match(FSHParser.ARROW);
         this.state = 418;
+        this.match(FSHParser.ARROW);
+        this.state = 419;
         this.match(FSHParser.STRING);
-        this.state = 420;
+        this.state = 421;
         this._errHandler.sync(this);
         _la = this._input.LA(1);
         if(_la===FSHParser.STRING) {
-            this.state = 419;
+            this.state = 420;
             this.match(FSHParser.STRING);
         }
 
-        this.state = 423;
+        this.state = 424;
         this._errHandler.sync(this);
         _la = this._input.LA(1);
         if(_la===FSHParser.CODE) {
-            this.state = 422;
+            this.state = 423;
             this.match(FSHParser.CODE);
         }
 
@@ -4581,26 +4591,26 @@ FSHParser.prototype.vsComponent = function() {
     var _la = 0; // Token type
     try {
         this.enterOuterAlt(localctx, 1);
-        this.state = 425;
+        this.state = 426;
         this.match(FSHParser.STAR);
-        this.state = 427;
+        this.state = 428;
         this._errHandler.sync(this);
         _la = this._input.LA(1);
         if(_la===FSHParser.KW_EXCLUDE) {
-            this.state = 426;
+            this.state = 427;
             this.match(FSHParser.KW_EXCLUDE);
         }
 
-        this.state = 431;
+        this.state = 432;
         this._errHandler.sync(this);
         switch(this._input.LA(1)) {
         case FSHParser.CODE:
         case FSHParser.COMMA_DELIMITED_CODES:
-            this.state = 429;
+            this.state = 430;
             this.vsConceptComponent();
             break;
         case FSHParser.KW_CODES:
-            this.state = 430;
+            this.state = 431;
             this.vsFilterComponent();
             break;
         default:
@@ -4680,27 +4690,27 @@ FSHParser.prototype.vsConceptComponent = function() {
     this.enterRule(localctx, 80, FSHParser.RULE_vsConceptComponent);
     var _la = 0; // Token type
     try {
-        this.state = 439;
+        this.state = 440;
         this._errHandler.sync(this);
         switch(this._input.LA(1)) {
         case FSHParser.CODE:
             this.enterOuterAlt(localctx, 1);
-            this.state = 433;
+            this.state = 434;
             this.code();
-            this.state = 435;
+            this.state = 436;
             this._errHandler.sync(this);
             _la = this._input.LA(1);
             if(_la===FSHParser.KW_FROM) {
-                this.state = 434;
+                this.state = 435;
                 this.vsComponentFrom();
             }
 
             break;
         case FSHParser.COMMA_DELIMITED_CODES:
             this.enterOuterAlt(localctx, 2);
-            this.state = 437;
-            this.match(FSHParser.COMMA_DELIMITED_CODES);
             this.state = 438;
+            this.match(FSHParser.COMMA_DELIMITED_CODES);
+            this.state = 439;
             this.vsComponentFrom();
             break;
         default:
@@ -4785,17 +4795,17 @@ FSHParser.prototype.vsFilterComponent = function() {
     var _la = 0; // Token type
     try {
         this.enterOuterAlt(localctx, 1);
-        this.state = 441;
-        this.match(FSHParser.KW_CODES);
         this.state = 442;
+        this.match(FSHParser.KW_CODES);
+        this.state = 443;
         this.vsComponentFrom();
-        this.state = 445;
+        this.state = 446;
         this._errHandler.sync(this);
         _la = this._input.LA(1);
         if(_la===FSHParser.KW_WHERE) {
-            this.state = 443;
-            this.match(FSHParser.KW_WHERE);
             this.state = 444;
+            this.match(FSHParser.KW_WHERE);
+            this.state = 445;
             this.vsFilterList();
         }
 
@@ -4878,35 +4888,35 @@ FSHParser.prototype.vsComponentFrom = function() {
     var _la = 0; // Token type
     try {
         this.enterOuterAlt(localctx, 1);
-        this.state = 447;
+        this.state = 448;
         this.match(FSHParser.KW_FROM);
-        this.state = 458;
+        this.state = 459;
         this._errHandler.sync(this);
         switch(this._input.LA(1)) {
         case FSHParser.KW_SYSTEM:
-            this.state = 448;
+            this.state = 449;
             this.vsFromSystem();
-            this.state = 451;
+            this.state = 452;
             this._errHandler.sync(this);
             _la = this._input.LA(1);
             if(_la===FSHParser.KW_AND) {
-                this.state = 449;
-                this.match(FSHParser.KW_AND);
                 this.state = 450;
+                this.match(FSHParser.KW_AND);
+                this.state = 451;
                 this.vsFromValueset();
             }
 
             break;
         case FSHParser.KW_VSREFERENCE:
-            this.state = 453;
+            this.state = 454;
             this.vsFromValueset();
-            this.state = 456;
+            this.state = 457;
             this._errHandler.sync(this);
             _la = this._input.LA(1);
             if(_la===FSHParser.KW_AND) {
-                this.state = 454;
-                this.match(FSHParser.KW_AND);
                 this.state = 455;
+                this.match(FSHParser.KW_AND);
+                this.state = 456;
                 this.vsFromSystem();
             }
 
@@ -4984,9 +4994,9 @@ FSHParser.prototype.vsFromSystem = function() {
     this.enterRule(localctx, 86, FSHParser.RULE_vsFromSystem);
     try {
         this.enterOuterAlt(localctx, 1);
-        this.state = 460;
-        this.match(FSHParser.KW_SYSTEM);
         this.state = 461;
+        this.match(FSHParser.KW_SYSTEM);
+        this.state = 462;
         this.match(FSHParser.SEQUENCE);
     } catch (re) {
     	if(re instanceof antlr4.error.RecognitionException) {
@@ -5063,9 +5073,9 @@ FSHParser.prototype.vsFromValueset = function() {
     var _la = 0; // Token type
     try {
         this.enterOuterAlt(localctx, 1);
-        this.state = 463;
-        this.match(FSHParser.KW_VSREFERENCE);
         this.state = 464;
+        this.match(FSHParser.KW_VSREFERENCE);
+        this.state = 465;
         _la = this._input.LA(1);
         if(!(_la===FSHParser.COMMA_DELIMITED_SEQUENCES || _la===FSHParser.SEQUENCE)) {
         this._errHandler.recoverInline(this);
@@ -5159,22 +5169,22 @@ FSHParser.prototype.vsFilterList = function() {
     this.enterRule(localctx, 90, FSHParser.RULE_vsFilterList);
     try {
         this.enterOuterAlt(localctx, 1);
-        this.state = 471;
+        this.state = 472;
         this._errHandler.sync(this);
         var _alt = this._interp.adaptivePredict(this._input,47,this._ctx)
         while(_alt!=2 && _alt!=antlr4.atn.ATN.INVALID_ALT_NUMBER) {
             if(_alt===1) {
-                this.state = 466;
-                this.vsFilterDefinition();
                 this.state = 467;
+                this.vsFilterDefinition();
+                this.state = 468;
                 this.match(FSHParser.KW_AND); 
             }
-            this.state = 473;
+            this.state = 474;
             this._errHandler.sync(this);
             _alt = this._interp.adaptivePredict(this._input,47,this._ctx);
         }
 
-        this.state = 474;
+        this.state = 475;
         this.vsFilterDefinition();
     } catch (re) {
     	if(re instanceof antlr4.error.RecognitionException) {
@@ -5251,15 +5261,15 @@ FSHParser.prototype.vsFilterDefinition = function() {
     var _la = 0; // Token type
     try {
         this.enterOuterAlt(localctx, 1);
-        this.state = 476;
-        this.match(FSHParser.SEQUENCE);
         this.state = 477;
+        this.match(FSHParser.SEQUENCE);
+        this.state = 478;
         this.vsFilterOperator();
-        this.state = 479;
+        this.state = 480;
         this._errHandler.sync(this);
         _la = this._input.LA(1);
         if(((((_la - 36)) & ~0x1f) == 0 && ((1 << (_la - 36)) & ((1 << (FSHParser.KW_TRUE - 36)) | (1 << (FSHParser.KW_FALSE - 36)) | (1 << (FSHParser.STRING - 36)) | (1 << (FSHParser.CODE - 36)) | (1 << (FSHParser.REGEX - 36)))) !== 0)) {
-            this.state = 478;
+            this.state = 479;
             this.vsFilterValue();
         }
 
@@ -5334,7 +5344,7 @@ FSHParser.prototype.vsFilterOperator = function() {
     var _la = 0; // Token type
     try {
         this.enterOuterAlt(localctx, 1);
-        this.state = 481;
+        this.state = 482;
         _la = this._input.LA(1);
         if(!(_la===FSHParser.EQUAL || _la===FSHParser.SEQUENCE)) {
         this._errHandler.recoverInline(this);
@@ -5424,32 +5434,32 @@ FSHParser.prototype.vsFilterValue = function() {
     var localctx = new VsFilterValueContext(this, this._ctx, this.state);
     this.enterRule(localctx, 96, FSHParser.RULE_vsFilterValue);
     try {
-        this.state = 488;
+        this.state = 489;
         this._errHandler.sync(this);
         switch(this._input.LA(1)) {
         case FSHParser.CODE:
             this.enterOuterAlt(localctx, 1);
-            this.state = 483;
+            this.state = 484;
             this.code();
             break;
         case FSHParser.KW_TRUE:
             this.enterOuterAlt(localctx, 2);
-            this.state = 484;
+            this.state = 485;
             this.match(FSHParser.KW_TRUE);
             break;
         case FSHParser.KW_FALSE:
             this.enterOuterAlt(localctx, 3);
-            this.state = 485;
+            this.state = 486;
             this.match(FSHParser.KW_FALSE);
             break;
         case FSHParser.REGEX:
             this.enterOuterAlt(localctx, 4);
-            this.state = 486;
+            this.state = 487;
             this.match(FSHParser.REGEX);
             break;
         case FSHParser.STRING:
             this.enterOuterAlt(localctx, 5);
-            this.state = 487;
+            this.state = 488;
             this.match(FSHParser.STRING);
             break;
         default:
@@ -5521,7 +5531,7 @@ FSHParser.prototype.path = function() {
     this.enterRule(localctx, 98, FSHParser.RULE_path);
     try {
         this.enterOuterAlt(localctx, 1);
-        this.state = 490;
+        this.state = 491;
         this.match(FSHParser.SEQUENCE);
     } catch (re) {
     	if(re instanceof antlr4.error.RecognitionException) {
@@ -5589,7 +5599,7 @@ FSHParser.prototype.paths = function() {
     this.enterRule(localctx, 100, FSHParser.RULE_paths);
     try {
         this.enterOuterAlt(localctx, 1);
-        this.state = 492;
+        this.state = 493;
         this.match(FSHParser.COMMA_DELIMITED_SEQUENCES);
     } catch (re) {
     	if(re instanceof antlr4.error.RecognitionException) {
@@ -5657,7 +5667,7 @@ FSHParser.prototype.caretPath = function() {
     this.enterRule(localctx, 102, FSHParser.RULE_caretPath);
     try {
         this.enterOuterAlt(localctx, 1);
-        this.state = 494;
+        this.state = 495;
         this.match(FSHParser.CARET_SEQUENCE);
     } catch (re) {
     	if(re instanceof antlr4.error.RecognitionException) {
@@ -5734,7 +5744,7 @@ FSHParser.prototype.flag = function() {
     var _la = 0; // Token type
     try {
         this.enterOuterAlt(localctx, 1);
-        this.state = 496;
+        this.state = 497;
         _la = this._input.LA(1);
         if(!((((_la) & ~0x1f) == 0 && ((1 << _la) & ((1 << FSHParser.KW_MOD) | (1 << FSHParser.KW_MS) | (1 << FSHParser.KW_SU))) !== 0))) {
         this._errHandler.recoverInline(this);
@@ -5822,7 +5832,7 @@ FSHParser.prototype.strength = function() {
     var _la = 0; // Token type
     try {
         this.enterOuterAlt(localctx, 1);
-        this.state = 498;
+        this.state = 499;
         _la = this._input.LA(1);
         if(!((((_la) & ~0x1f) == 0 && ((1 << _la) & ((1 << FSHParser.KW_EXAMPLE) | (1 << FSHParser.KW_PREFERRED) | (1 << FSHParser.KW_EXTENSIBLE) | (1 << FSHParser.KW_REQUIRED))) !== 0))) {
         this._errHandler.recoverInline(this);
@@ -5936,73 +5946,73 @@ FSHParser.prototype.value = function() {
     var localctx = new ValueContext(this, this._ctx, this.state);
     this.enterRule(localctx, 108, FSHParser.RULE_value);
     try {
-        this.state = 511;
+        this.state = 512;
         this._errHandler.sync(this);
         var la_ = this._interp.adaptivePredict(this._input,50,this._ctx);
         switch(la_) {
         case 1:
             this.enterOuterAlt(localctx, 1);
-            this.state = 500;
+            this.state = 501;
             this.match(FSHParser.SEQUENCE);
             break;
 
         case 2:
             this.enterOuterAlt(localctx, 2);
-            this.state = 501;
+            this.state = 502;
             this.match(FSHParser.STRING);
             break;
 
         case 3:
             this.enterOuterAlt(localctx, 3);
-            this.state = 502;
+            this.state = 503;
             this.match(FSHParser.MULTILINE_STRING);
             break;
 
         case 4:
             this.enterOuterAlt(localctx, 4);
-            this.state = 503;
+            this.state = 504;
             this.match(FSHParser.NUMBER);
             break;
 
         case 5:
             this.enterOuterAlt(localctx, 5);
-            this.state = 504;
+            this.state = 505;
             this.match(FSHParser.DATETIME);
             break;
 
         case 6:
             this.enterOuterAlt(localctx, 6);
-            this.state = 505;
+            this.state = 506;
             this.match(FSHParser.TIME);
             break;
 
         case 7:
             this.enterOuterAlt(localctx, 7);
-            this.state = 506;
+            this.state = 507;
             this.reference();
             break;
 
         case 8:
             this.enterOuterAlt(localctx, 8);
-            this.state = 507;
+            this.state = 508;
             this.code();
             break;
 
         case 9:
             this.enterOuterAlt(localctx, 9);
-            this.state = 508;
+            this.state = 509;
             this.quantity();
             break;
 
         case 10:
             this.enterOuterAlt(localctx, 10);
-            this.state = 509;
+            this.state = 510;
             this.ratio();
             break;
 
         case 11:
             this.enterOuterAlt(localctx, 11);
-            this.state = 510;
+            this.state = 511;
             this.bool();
             break;
 
@@ -6101,27 +6111,27 @@ FSHParser.prototype.item = function() {
     var _la = 0; // Token type
     try {
         this.enterOuterAlt(localctx, 1);
-        this.state = 513;
+        this.state = 514;
         this.match(FSHParser.SEQUENCE);
-        this.state = 516;
+        this.state = 517;
         this._errHandler.sync(this);
         _la = this._input.LA(1);
         if(_la===FSHParser.KW_NAMED) {
-            this.state = 514;
-            this.match(FSHParser.KW_NAMED);
             this.state = 515;
+            this.match(FSHParser.KW_NAMED);
+            this.state = 516;
             this.match(FSHParser.SEQUENCE);
         }
 
-        this.state = 518;
+        this.state = 519;
         this.match(FSHParser.CARD);
-        this.state = 522;
+        this.state = 523;
         this._errHandler.sync(this);
         _la = this._input.LA(1);
         while((((_la) & ~0x1f) == 0 && ((1 << _la) & ((1 << FSHParser.KW_MOD) | (1 << FSHParser.KW_MS) | (1 << FSHParser.KW_SU))) !== 0)) {
-            this.state = 519;
+            this.state = 520;
             this.flag();
-            this.state = 524;
+            this.state = 525;
             this._errHandler.sync(this);
             _la = this._input.LA(1);
         }
@@ -6195,13 +6205,13 @@ FSHParser.prototype.code = function() {
     this.enterRule(localctx, 112, FSHParser.RULE_code);
     try {
         this.enterOuterAlt(localctx, 1);
-        this.state = 525;
+        this.state = 526;
         this.match(FSHParser.CODE);
-        this.state = 527;
+        this.state = 528;
         this._errHandler.sync(this);
         var la_ = this._interp.adaptivePredict(this._input,53,this._ctx);
         if(la_===1) {
-            this.state = 526;
+            this.state = 527;
             this.match(FSHParser.STRING);
 
         }
@@ -6280,15 +6290,15 @@ FSHParser.prototype.concept = function() {
     var _la = 0; // Token type
     try {
         this.enterOuterAlt(localctx, 1);
-        this.state = 529;
-        this.match(FSHParser.STAR);
         this.state = 530;
+        this.match(FSHParser.STAR);
+        this.state = 531;
         this.code();
-        this.state = 532;
+        this.state = 533;
         this._errHandler.sync(this);
         _la = this._input.LA(1);
         if(_la===FSHParser.STRING) {
-            this.state = 531;
+            this.state = 532;
             this.match(FSHParser.STRING);
         }
 
@@ -6362,9 +6372,9 @@ FSHParser.prototype.quantity = function() {
     this.enterRule(localctx, 116, FSHParser.RULE_quantity);
     try {
         this.enterOuterAlt(localctx, 1);
-        this.state = 534;
-        this.match(FSHParser.NUMBER);
         this.state = 535;
+        this.match(FSHParser.NUMBER);
+        this.state = 536;
         this.match(FSHParser.UNIT);
     } catch (re) {
     	if(re instanceof antlr4.error.RecognitionException) {
@@ -6443,11 +6453,11 @@ FSHParser.prototype.ratio = function() {
     this.enterRule(localctx, 118, FSHParser.RULE_ratio);
     try {
         this.enterOuterAlt(localctx, 1);
-        this.state = 537;
-        this.ratioPart();
         this.state = 538;
-        this.match(FSHParser.COLON);
+        this.ratioPart();
         this.state = 539;
+        this.match(FSHParser.COLON);
+        this.state = 540;
         this.ratioPart();
     } catch (re) {
     	if(re instanceof antlr4.error.RecognitionException) {
@@ -6520,13 +6530,13 @@ FSHParser.prototype.reference = function() {
     var _la = 0; // Token type
     try {
         this.enterOuterAlt(localctx, 1);
-        this.state = 541;
+        this.state = 542;
         this.match(FSHParser.REFERENCE);
-        this.state = 543;
+        this.state = 544;
         this._errHandler.sync(this);
         _la = this._input.LA(1);
         if(_la===FSHParser.STRING) {
-            this.state = 542;
+            this.state = 543;
             this.match(FSHParser.STRING);
         }
 
@@ -6599,19 +6609,19 @@ FSHParser.prototype.ratioPart = function() {
     var localctx = new RatioPartContext(this, this._ctx, this.state);
     this.enterRule(localctx, 122, FSHParser.RULE_ratioPart);
     try {
-        this.state = 547;
+        this.state = 548;
         this._errHandler.sync(this);
         var la_ = this._interp.adaptivePredict(this._input,56,this._ctx);
         switch(la_) {
         case 1:
             this.enterOuterAlt(localctx, 1);
-            this.state = 545;
+            this.state = 546;
             this.match(FSHParser.NUMBER);
             break;
 
         case 2:
             this.enterOuterAlt(localctx, 2);
-            this.state = 546;
+            this.state = 547;
             this.quantity();
             break;
 
@@ -6687,7 +6697,7 @@ FSHParser.prototype.bool = function() {
     var _la = 0; // Token type
     try {
         this.enterOuterAlt(localctx, 1);
-        this.state = 549;
+        this.state = 550;
         _la = this._input.LA(1);
         if(!(_la===FSHParser.KW_TRUE || _la===FSHParser.KW_FALSE)) {
         this._errHandler.recoverInline(this);
@@ -6765,17 +6775,17 @@ FSHParser.prototype.targetType = function() {
     var localctx = new TargetTypeContext(this, this._ctx, this.state);
     this.enterRule(localctx, 126, FSHParser.RULE_targetType);
     try {
-        this.state = 553;
+        this.state = 554;
         this._errHandler.sync(this);
         switch(this._input.LA(1)) {
         case FSHParser.SEQUENCE:
             this.enterOuterAlt(localctx, 1);
-            this.state = 551;
+            this.state = 552;
             this.match(FSHParser.SEQUENCE);
             break;
         case FSHParser.REFERENCE:
             this.enterOuterAlt(localctx, 2);
-            this.state = 552;
+            this.state = 553;
             this.reference();
             break;
         default:
diff --git a/src/import/parserContexts.ts b/src/import/parserContexts.ts
index 1bf01ac..419c010 100644
--- a/src/import/parserContexts.ts
+++ b/src/import/parserContexts.ts
@@ -108,6 +108,7 @@ export interface MappingMetadataContext extends ParserRuleContext {
   description(): DescriptionContext;
   source(): SourceContext;
   target(): TargetContext;
+  title(): TitleContext;
 }
 
 export interface ParentContext extends ParserRuleContext {
diff --git a/src/utils/Fishable.ts b/src/utils/Fishable.ts
index a005751..a143a30 100644
--- a/src/utils/Fishable.ts
+++ b/src/utils/Fishable.ts
@@ -6,6 +6,7 @@ export enum Type {
   Instance,
   Invariant, // NOTE: only defined in FSHTanks, not FHIR defs
   RuleSet, // NOTE: only defined in FSHTanks, not FHIR defs
+  Mapping, // NOTE: only defined in FSHTanks, not FHIR defs
   Resource, // NOTE: only defined in FHIR defs, not FSHTanks
   Type // NOTE: only defined in FHIR defs, not FSHTanks
 }


Test patch:
diff --git a/test/export/MappingExporter.test.ts b/test/export/MappingExporter.test.ts
new file mode 100644
index 0000000..156b922
--- /dev/null
+++ b/test/export/MappingExporter.test.ts
@@ -0,0 +1,240 @@
+import { MappingExporter, Package } from '../../src/export';
+import { FSHDocument, FSHTank } from '../../src/import';
+import { TestFisher } from '../testhelpers';
+import { loggerSpy } from '../testhelpers';
+import { FHIRDefinitions, loadFromPath } from '../../src/fhirdefs';
+import path from 'path';
+import { StructureDefinition } from '../../src/fhirtypes';
+import { Mapping } from '../../src/fshtypes';
+import { MappingRule } from '../../src/fshtypes/rules';
+
+describe('MappingExporter', () => {
+  let defs: FHIRDefinitions;
+  let doc: FSHDocument;
+  let exporter: MappingExporter;
+  let observation: StructureDefinition;
+
+  beforeAll(() => {
+    defs = new FHIRDefinitions();
+    loadFromPath(
+      path.join(__dirname, '..', 'testhelpers', 'testdefs', 'package'),
+      'testPackage',
+      defs
+    );
+  });
+
+  beforeEach(() => {
+    doc = new FSHDocument('fileName');
+    const input = new FSHTank([doc], {
+      name: 'test',
+      version: '0.0.1',
+      canonical: 'http://example.com'
+    });
+    const pkg = new Package(input.config);
+    const fisher = new TestFisher(input, defs, pkg);
+    exporter = new MappingExporter(input, pkg, fisher);
+    observation = fisher.fishForStructureDefinition('Observation');
+    observation.id = 'MyObservation';
+    pkg.profiles.push(observation);
+  });
+
+  it('should log an error when the mapping source does not exist', () => {
+    /**
+     * Mapping: MyMapping
+     * Source: MyInvalidSource
+     */
+    const mapping = new Mapping('MyMapping').withFile('NoSource.fsh').withLocation([1, 2, 3, 4]);
+    mapping.source = 'MyInvalidSource';
+    doc.mappings.set(mapping.name, mapping);
+    exporter.export();
+    expect(loggerSpy.getLastMessage('error')).toMatch(
+      /Unable to find source "MyInvalidSource".*File: NoSource\.fsh.*Line: 1 - 3\D*/s
+    );
+  });
+
+  describe('#setMetadata', () => {
+    it('should export no mappings with empty input', () => {
+      const originalLength = observation.mapping.length;
+      exporter.export();
+      expect(observation.mapping.length).toBe(originalLength);
+    });
+
+    it('should export the simplest possible mapping', () => {
+      /**
+       * Mapping: MyMapping
+       * Source: MyObservation
+       */
+      const originalLength = observation.mapping.length;
+      const mapping = new Mapping('MyMapping');
+      mapping.source = 'MyObservation';
+      doc.mappings.set(mapping.name, mapping);
+      exporter.export();
+      expect(observation.mapping.length).toBe(originalLength + 1);
+      const exported = observation.mapping.slice(-1)[0];
+      expect(exported.identity).toBe('MyMapping');
+    });
+
+    it('should export a mapping when one does not yet exist', () => {
+      /**
+       * Mapping: MyMapping
+       * Source: MyObservation
+       */
+      delete observation.mapping;
+      const mapping = new Mapping('MyMapping');
+      mapping.source = 'MyObservation';
+      doc.mappings.set(mapping.name, mapping);
+      exporter.export();
+      expect(observation.mapping.length).toBe(1);
+      const exported = observation.mapping.slice(-1)[0];
+      expect(exported.identity).toBe('MyMapping');
+    });
+
+    it('should export a mapping with optional metadata', () => {
+      /**
+       * Mapping: MyMapping
+       * Id: my-map
+       * Source: MyObservation
+       * Target: "http://mytarget.com"
+       * Description: "Hello there"
+       * Title: "HEY THERE"
+       */
+      const originalLength = observation.mapping.length;
+      const mapping = new Mapping('MyMapping');
+      mapping.id = 'my-map';
+      mapping.source = 'MyObservation';
+      mapping.target = 'http://mytarget.com';
+      mapping.description = 'Hello there';
+      mapping.title = 'HEY THERE';
+      doc.mappings.set(mapping.name, mapping);
+      exporter.export();
+      expect(observation.mapping.length).toBe(originalLength + 1);
+      const exported = observation.mapping.slice(-1)[0];
+      expect(exported.identity).toBe('my-map');
+      expect(exported.name).toBe('HEY THERE');
+      expect(exported.uri).toBe('http://mytarget.com');
+      expect(exported.comment).toBe('Hello there');
+    });
+
+    it('should log an error and not apply a mapping with an invalid Id', () => {
+      /**
+       * Mapping: MyMapping
+       * Source: MyObservation
+       * Id: Invalid!
+       */
+      const originalLength = observation.mapping.length;
+      const mapping = new Mapping('MyMapping')
+        .withLocation([1, 2, 3, 4])
+        .withFile('BadMapping.fsh');
+      mapping.source = 'MyObservation';
+      mapping.id = 'Invalid!';
+      doc.mappings.set(mapping.name, mapping);
+      exporter.export();
+      expect(observation.mapping.length).toBe(originalLength);
+      expect(loggerSpy.getLastMessage('error')).toMatch(
+        /The string "Invalid!" does not represent a valid FHIR id/
+      );
+      expect(loggerSpy.getLastMessage('error')).toMatch(/File: BadMapping\.fsh.*Line: 1 - 3\D*/s);
+    });
+  });
+
+  describe('#setMappingRules', () => {
+    let mapping: Mapping;
+
+    beforeEach(() => {
+      mapping = new Mapping('MyMapping');
+      mapping.source = 'MyObservation';
+      doc.mappings.set(mapping.name, mapping);
+    });
+
+    it('should apply a valid mapping rule', () => {
+      /**
+       * Mapping: MyMapping
+       * Source: MyObservation
+       * * status -> "Observation.otherStatus"
+       */
+      const mapRule = new MappingRule('status');
+      mapRule.map = 'Observation.otherStatus';
+      mapping.rules.push(mapRule);
+      const status = observation.elements.find(e => e.id === 'Observation.status');
+      const originalLength = status.mapping.length;
+      exporter.export();
+      expect(status.mapping.length).toBe(originalLength + 1);
+      const exported = status.mapping.slice(-1)[0];
+      expect(exported.map).toBe('Observation.otherStatus');
+      expect(exported.identity).toBe('MyMapping');
+    });
+
+    it('should apply a valid mapping rule with no path', () => {
+      /**
+       * Mapping: MyMapping
+       * Source: MyObservation
+       * * status -> "Observation.otherStatus"
+       */
+      const mapRule = new MappingRule('');
+      mapRule.map = 'OtherObservation';
+      mapping.rules.push(mapRule);
+      const status = observation.elements.find(e => e.id === 'Observation');
+      const originalLength = status.mapping.length;
+      exporter.export();
+      expect(status.mapping.length).toBe(originalLength + 1);
+      const exported = status.mapping.slice(-1)[0];
+      expect(exported.map).toBe('OtherObservation');
+      expect(exported.identity).toBe('MyMapping');
+    });
+
+    it('should log an error and skip rules with paths that cannot be found', () => {
+      /**
+       * Mapping: MyMapping
+       * Source: MyObservation
+       * * notAPath -> "whoCares"
+       * * status -> "Observation.otherStatus"
+       */
+      const fakePathRule = new MappingRule('notAPath')
+        .withFile('BadRule.fsh')
+        .withLocation([1, 2, 1, 3]);
+      fakePathRule.map = 'whoCares';
+      mapping.rules.push(fakePathRule);
+      const statusRule = new MappingRule('status');
+      statusRule.map = 'Observation.otherStatus';
+      mapping.rules.push(statusRule);
+      const status = observation.elements.find(e => e.id === 'Observation.status');
+      const originalLength = status.mapping.length;
+      exporter.export();
+      // valid rule on status should still be applied
+      expect(status.mapping.length).toBe(originalLength + 1);
+      const exported = status.mapping.slice(-1)[0];
+      expect(exported.map).toBe('Observation.otherStatus');
+      expect(exported.identity).toBe('MyMapping');
+      expect(loggerSpy.getLastMessage('error')).toMatch(
+        /No element found at path notAPath for MyMapping.*File: BadRule\.fsh.*Line: 1\D*/s
+      );
+    });
+
+    it('should log an error and skip rules with invalid mappings', () => {
+      /**
+       * Mapping: MyMapping
+       * Source: MyObservation
+       * * category ->
+       * * status -> "Observation.otherStatus"
+       */
+      const noTargetRule = new MappingRule('category')
+        .withFile('BadRule.fsh')
+        .withLocation([1, 2, 1, 3]);
+      mapping.rules.push(noTargetRule);
+      const statusRule = new MappingRule('status');
+      statusRule.map = 'Observation.otherStatus';
+      mapping.rules.push(statusRule);
+      const status = observation.elements.find(e => e.id === 'Observation.status');
+      const originalLength = status.mapping.length;
+      exporter.export();
+      // valid rule on status should still be applied
+      expect(status.mapping.length).toBe(originalLength + 1);
+      const exported = status.mapping.slice(-1)[0];
+      expect(exported.map).toBe('Observation.otherStatus');
+      expect(exported.identity).toBe('MyMapping');
+      expect(loggerSpy.getLastMessage('error')).toMatch(
+        /Invalid mapping, mapping.identity and mapping.map are 1..1 and must be set.*File: BadRule\.fsh.*Line: 1\D*/s
+      );
+    });
+  });
+});
diff --git a/test/fhirtypes/ElementDefinition.applyMapping.test.ts b/test/fhirtypes/ElementDefinition.applyMapping.test.ts
new file mode 100644
index 0000000..b92a340
--- /dev/null
+++ b/test/fhirtypes/ElementDefinition.applyMapping.test.ts
@@ -0,0 +1,68 @@
+import { loadFromPath } from '../../src/fhirdefs/load';
+import { FHIRDefinitions } from '../../src/fhirdefs/FHIRDefinitions';
+import { StructureDefinition } from '../../src/fhirtypes/StructureDefinition';
+import { TestFisher } from '../testhelpers';
+import path from 'path';
+import { FshCode } from '../../src/fshtypes';
+
+describe('ElementDefinition', () => {
+  let defs: FHIRDefinitions;
+  let observation: StructureDefinition;
+  let fisher: TestFisher;
+  beforeAll(() => {
+    defs = new FHIRDefinitions();
+    loadFromPath(
+      path.join(__dirname, '..', 'testhelpers', 'testdefs', 'package'),
+      'testPackage',
+      defs
+    );
+    fisher = new TestFisher().withFHIR(defs);
+  });
+  beforeEach(() => {
+    observation = fisher.fishForStructureDefinition('Observation');
+  });
+
+  describe('#applyMapping', () => {
+    it('should apply a simple mapping', () => {
+      const status = observation.elements.find(e => e.id === 'Observation.status');
+      const originalLength = status.mapping.length;
+      status.applyMapping('myId', 'myMap', 'myComment', new FshCode('myLanguageCode'));
+      expect(status.mapping.length).toBe(originalLength + 1);
+      const mapping = status.mapping[status.mapping.length - 1];
+      expect(mapping.identity).toBe('myId');
+      expect(mapping.map).toBe('myMap');
+      expect(mapping.comment).toBe('myComment');
+      expect(mapping.language).toBe('myLanguageCode');
+    });
+
+    it('should apply a mapping without a comment and language', () => {
+      const status = observation.elements.find(e => e.id === 'Observation.status');
+      const originalLength = status.mapping.length;
+      status.applyMapping('myId', 'myMap', undefined, undefined);
+      expect(status.mapping.length).toBe(originalLength + 1);
+      const mapping = status.mapping[status.mapping.length - 1];
+      expect(mapping.identity).toBe('myId');
+      expect(mapping.map).toBe('myMap');
+      expect(mapping.comment).toBeUndefined();
+      expect(mapping.language).toBeUndefined();
+    });
+
+    it('should throw InvalidMappingError when applying a mapping with no identity', () => {
+      const status = observation.elements.find(e => e.id === 'Observation.status');
+      const originalLength = status.mapping.length;
+      expect(() => {
+        status.applyMapping(undefined, 'myMap', 'myComment', new FshCode('myLanguageCode'));
+      }).toThrow('Invalid mapping, mapping.identity and mapping.map are 1..1 and must be set.');
+      expect(status.mapping.length).toBe(originalLength);
+    });
+
+    it('should throw InvalidFHIRIdError when applying a mapping with an invalid id', () => {
+      const status = observation.elements.find(e => e.id === 'Observation.status');
+      const originalLength = status.mapping.length;
+      expect(() => {
+        status.applyMapping('invalid!', 'myMap', 'myComment', new FshCode('myLanguageCode'));
+      }).toThrow('The string "invalid!" does not represent a valid FHIR id.');
+      expect(status.mapping.length).toBe(originalLength);
+    });
+  });
+});
diff --git a/test/fshtypes/Mapping.test.ts b/test/fshtypes/Mapping.test.ts
index a70678a..6ddd9a2 100644
--- a/test/fshtypes/Mapping.test.ts
+++ b/test/fshtypes/Mapping.test.ts
@@ -10,6 +10,7 @@ describe('Mapping', () => {
       expect(m.source).toBeUndefined();
       expect(m.target).toBeUndefined();
       expect(m.description).toBeUndefined();
+      expect(m.title).toBeUndefined();
       expect(m.rules).toBeEmpty();
     });
   });
diff --git a/test/import/FSHImporter.Mapping.test.ts b/test/import/FSHImporter.Mapping.test.ts
index bd5c69f..d76165d 100644
--- a/test/import/FSHImporter.Mapping.test.ts
+++ b/test/import/FSHImporter.Mapping.test.ts
@@ -34,6 +34,7 @@ describe('FSHImporter', () => {
         Source: Patient
         Target: "http://some.com/mappedTo"
         Description: "This is a description"
+        Title: "This is a title"
         `;
       const result = importSingleText(input, 'Mapping.fsh');
       expect(result.mappings.size).toBe(1);
@@ -43,11 +44,12 @@ describe('FSHImporter', () => {
       expect(mapping.source).toBe('Patient');
       expect(mapping.target).toBe('http://some.com/mappedTo');
       expect(mapping.description).toBe('This is a description');
+      expect(mapping.title).toBe('This is a title');
       expect(mapping.sourceInfo.location).toEqual({
         startLine: 2,
         startColumn: 9,
-        endLine: 6,
-        endColumn: 44
+        endLine: 7,
+        endColumn: 32
       });
       expect(mapping.sourceInfo.file).toBe('Mapping.fsh');
     });
@@ -58,10 +60,12 @@ describe('FSHImporter', () => {
         Id: my-map
         Source: Patient
         Target: "http://some.com/mappedTo"
+        Title: "This is a title"
         Description: "This is a description"
         Id: my-map-2
         Source: Patient2
         Target: "http://some.com/mappedTo2"
+        Title: "This is a title 2"
         Description: "This is a description 2"
         `;
       const result = importSingleText(input, 'Mapping.fsh');
@@ -73,7 +77,7 @@ describe('FSHImporter', () => {
       expect(mapping.target).toBe('http://some.com/mappedTo');
       expect(mapping.description).toBe('This is a description');
       expect(loggerSpy.getLastMessage('error')).toMatch(
-        /This is a description.*File: Mapping\.fsh.*Line: 10\D*/s
+        /This is a description.*File: Mapping\.fsh.*Line: 12\D*/s
       );
     });
 
diff --git a/test/import/FSHTank.test.ts b/test/import/FSHTank.test.ts
index 600165a..d5be222 100644
--- a/test/import/FSHTank.test.ts
+++ b/test/import/FSHTank.test.ts
@@ -7,7 +7,8 @@ import {
   FshCodeSystem,
   Invariant,
   FshCode,
-  RuleSet
+  RuleSet,
+  Mapping
 } from '../../src/fshtypes';
 import { Type, Metadata } from '../../src/utils/Fishable';
 
@@ -45,6 +46,8 @@ describe('FSHTank', () => {
     doc3.invariants.get('Invariant1').description = 'first invariant';
     doc3.invariants.get('Invariant1').severity = new FshCode('error');
     doc3.ruleSets.set('RuleSet1', new RuleSet('RuleSet1'));
+    doc3.mappings.set('Mapping1', new Mapping('Mapping1'));
+    doc3.mappings.get('Mapping1').id = 'map1';
 
     tank = new FSHTank([doc1, doc2, doc3], {
       name: 'test',
@@ -60,7 +63,7 @@ describe('FSHTank', () => {
       expect(tank.fish('vs1').name).toBe('ValueSet1');
       expect(tank.fish('cs1').name).toBe('CodeSystem1');
       expect(tank.fish('inst1').name).toBe('Instance1');
-      // not applicable for Invariant or RuleSet
+      // not applicable for Invariant or RuleSet or Mapping
     });
 
     it('should find valid fish when fishing by name for all types', () => {
@@ -71,6 +74,7 @@ describe('FSHTank', () => {
       expect(tank.fish('Instance1').id).toBe('inst1');
       expect(tank.fish('Invariant1').name).toBe('Invariant1');
       expect(tank.fish('RuleSet1').name).toBe('RuleSet1');
+      expect(tank.fish('Mapping1').name).toBe('Mapping1');
     });
 
     it('should find valid fish when fishing by url for all types', () => {
@@ -78,7 +82,7 @@ describe('FSHTank', () => {
       expect(tank.fish('http://example.org/StructureDefinition/ext1').name).toBe('Extension1');
       expect(tank.fish('http://example.org/ValueSet/vs1').name).toBe('ValueSet1');
       expect(tank.fish('http://example.org/CodeSystem/cs1').name).toBe('CodeSystem1');
-      // not applicable for Instance or Invariant or RuleSet
+      // not applicable for Instance or Invariant or RuleSet or Mapping
     });
 
     it('should not find fish when fishing by invalid name/id/url', () => {
@@ -96,6 +100,7 @@ describe('FSHTank', () => {
           Type.Instance,
           Type.Invariant,
           Type.RuleSet,
+          Type.Mapping,
           Type.Resource,
           Type.Type
         )
@@ -113,6 +118,7 @@ describe('FSHTank', () => {
           Type.Instance,
           Type.Invariant,
           Type.RuleSet,
+          Type.Mapping,
           Type.Resource,
           Type.Type
         )
@@ -130,6 +136,7 @@ describe('FSHTank', () => {
           Type.Instance,
           Type.Invariant,
           Type.RuleSet,
+          Type.Mapping,
           Type.Resource,
           Type.Type
         )
@@ -147,6 +154,7 @@ describe('FSHTank', () => {
           Type.Instance,
           Type.Invariant,
           Type.RuleSet,
+          Type.Mapping,
           Type.Resource,
           Type.Type
         )
@@ -164,6 +172,7 @@ describe('FSHTank', () => {
           Type.CodeSystem,
           Type.Invariant,
           Type.RuleSet,
+          Type.Mapping,
           Type.Resource,
           Type.Type
         )
@@ -181,6 +190,7 @@ describe('FSHTank', () => {
           Type.CodeSystem,
           Type.Instance,
           Type.RuleSet,
+          Type.Mapping,
           Type.Resource,
           Type.Type
         )
@@ -198,6 +208,25 @@ describe('FSHTank', () => {
           Type.CodeSystem,
           Type.Instance,
           Type.Invariant,
+          Type.Mapping,
+          Type.Resource,
+          Type.Type
+        )
+      ).toBeUndefined();
+    });
+
+    it('should only find Mappings when Mappings are requested', () => {
+      expect(tank.fish('Mapping1', Type.Mapping).name).toBe('Mapping1');
+      expect(
+        tank.fish(
+          'Mapping1',
+          Type.Profile,
+          Type.Extension,
+          Type.ValueSet,
+          Type.CodeSystem,
+          Type.Instance,
+          Type.Invariant,
+          Type.RuleSet,
           Type.Resource,
           Type.Type
         )
@@ -240,13 +269,18 @@ describe('FSHTank', () => {
       id: 'RuleSet1', // id will always be name for Mixins
       name: 'RuleSet1'
     };
+    const map1MD: Metadata = {
+      id: 'map1',
+      name: 'Mapping1'
+    };
+
     it('should find valid fish metadata when fishing by id for all types', () => {
       expect(tank.fishForMetadata('prf1')).toEqual(prf1MD);
       expect(tank.fishForMetadata('ext1')).toEqual(ext1MD);
       expect(tank.fishForMetadata('vs1')).toEqual(vs1MD);
       expect(tank.fishForMetadata('cs1')).toEqual(cs1MD);
       expect(tank.fishForMetadata('inst1')).toEqual(inst1MD);
-      // not applicable for Invariant or RuleSet
+      // not applicable for Invariant or RuleSet or Mapping
     });
 
     it('should find valid fish when fishing by name for all types', () => {
@@ -257,6 +291,7 @@ describe('FSHTank', () => {
       expect(tank.fishForMetadata('Instance1')).toEqual(inst1MD);
       expect(tank.fishForMetadata('Invariant1')).toEqual(inv1MD);
       expect(tank.fishForMetadata('RuleSet1')).toEqual(rul1MD);
+      expect(tank.fishForMetadata('Mapping1')).toEqual(map1MD);
     });
 
     it('should find valid fish when fishing by url for all types', () => {
@@ -264,7 +299,7 @@ describe('FSHTank', () => {
       expect(tank.fishForMetadata('http://example.org/StructureDefinition/ext1')).toEqual(ext1MD);
       expect(tank.fishForMetadata('http://example.org/ValueSet/vs1')).toEqual(vs1MD);
       expect(tank.fishForMetadata('http://example.org/CodeSystem/cs1')).toEqual(cs1MD);
-      // not applicable for Instance or Invariant or RuleSet
+      // not applicable for Instance or Invariant or RuleSet or Mapping
     });
 
     it('should not find fish when fishing by invalid name/id/url', () => {
@@ -282,6 +317,7 @@ describe('FSHTank', () => {
           Type.Instance,
           Type.Invariant,
           Type.RuleSet,
+          Type.Mapping,
           Type.Resource,
           Type.Type
         )
@@ -299,6 +335,7 @@ describe('FSHTank', () => {
           Type.Instance,
           Type.Invariant,
           Type.RuleSet,
+          Type.Mapping,
           Type.Resource,
           Type.Type
         )
@@ -316,6 +353,7 @@ describe('FSHTank', () => {
           Type.Instance,
           Type.Invariant,
           Type.RuleSet,
+          Type.Mapping,
           Type.Resource,
           Type.Type
         )
@@ -333,6 +371,7 @@ describe('FSHTank', () => {
           Type.Instance,
           Type.Invariant,
           Type.RuleSet,
+          Type.Mapping,
           Type.Resource,
           Type.Type
         )
@@ -350,6 +389,7 @@ describe('FSHTank', () => {
           Type.CodeSystem,
           Type.Invariant,
           Type.RuleSet,
+          Type.Mapping,
           Type.Resource,
           Type.Type
         )
@@ -367,6 +407,7 @@ describe('FSHTank', () => {
           Type.CodeSystem,
           Type.Instance,
           Type.RuleSet,
+          Type.Mapping,
           Type.Resource,
           Type.Type
         )
@@ -377,13 +418,32 @@ describe('FSHTank', () => {
       expect(tank.fishForMetadata('RuleSet1', Type.RuleSet)).toEqual(rul1MD);
       expect(
         tank.fishForMetadata(
-          'Mixin1',
+          'RuleSet1',
+          Type.Profile,
+          Type.Extension,
+          Type.ValueSet,
+          Type.CodeSystem,
+          Type.Instance,
+          Type.Invariant,
+          Type.Mapping,
+          Type.Resource,
+          Type.Type
+        )
+      ).toBeUndefined();
+    });
+
+    it('should only find Mappings when Mappings are requested', () => {
+      expect(tank.fishForMetadata('Mapping1', Type.Mapping)).toEqual(map1MD);
+      expect(
+        tank.fishForMetadata(
+          'Mapping1',
           Type.Profile,
           Type.Extension,
           Type.ValueSet,
           Type.CodeSystem,
           Type.Instance,
           Type.Invariant,
+          Type.RuleSet,
           Type.Resource,
           Type.Type
         )
@@ -416,6 +476,9 @@ describe('FSHTank', () => {
       expect(tank.fishForFHIR('Invariant1', Type.Invariant)).toBeUndefined();
       expect(tank.fishForFHIR('RuleSet1')).toBeUndefined();
       expect(tank.fishForFHIR('RuleSet1', Type.RuleSet)).toBeUndefined();
+      expect(tank.fishForFHIR('map1')).toBeUndefined();
+      expect(tank.fishForFHIR('map1', Type.Mapping)).toBeUndefined();
+      expect(tank.fishForFHIR('Mapping1')).toBeUndefined();
     });
   });
 });