{
    "$schema": "http://json-schema.org/draft-04/schema#",
    "targetType": "document",
    "schemaType": "document",
    "type": "object",
    "required": [
        "schemaType",
        "_documentID",
        "_corpusID"
    ],
    "properties": {
        "schemaType": {
            "type": "string",
            "description": "Schema type",
            "searchable": true,
            "searchModes": [
                "noop"
            ],
            "locked": true
        },
        "_documentID": {
            "type": "string",
            "description": "Internal document GUID",
            "searchable": true,
            "searchModes": [
                "noop"
            ],
            "locked": true
        },
        "_corpusID": {
            "type": "string",
            "description": "Internal Corpus GUID",
            "searchable": true,
            "searchModes": [
                "noop"
            ],
            "locked": true
        }
    }
}