Program: 26798
Project: 26798
Buggy source:
public void writePackageHelper(ProcessingEnvironment processingEnvironment) throws IOException {
  int count=0;
  if (!packagePrivateList.isEmpty()) {
    TypeSpec.Builder typeBuilder=TypeSpec.classBuilder(elementClassName.simpleName() + databaseDefinition.classSeparator + "String_Node_Str").addModifiers(Modifier.PUBLIC,Modifier.FINAL);
    for (    ColumnDefinition columnDefinition : packagePrivateList) {
      String helperClassName=manager.getElements().getPackageOf(columnDefinition.element).toString() + "String_Node_Str" + ClassName.get((TypeElement)columnDefinition.element.getEnclosingElement()).simpleName()+ databaseDefinition.classSeparator+ "String_Node_Str";
      ClassName className=ClassName.bestGuess(helperClassName);
      if (PackagePrivateAccess.containsColumn(className,columnDefinition.columnName)) {
        MethodSpec.Builder method=MethodSpec.methodBuilder("String_Node_Str" + StringUtils.capitalize(columnDefinition.columnName)).addModifiers(Modifier.PUBLIC,Modifier.STATIC,Modifier.FINAL).addParameter(elementTypeName,ModelUtils.getVariable(false)).returns(columnDefinition.elementTypeName);
        boolean samePackage=ElementUtility.isInSamePackage(manager,columnDefinition.element,this.element);
        if (samePackage) {
          method.addStatement("String_Node_Str",ModelUtils.getVariable(false),columnDefinition.elementName);
        }
 else {
          method.addStatement("String_Node_Str",className,StringUtils.capitalize(columnDefinition.columnName),ModelUtils.getVariable(false));
        }
        typeBuilder.addMethod(method.build());
        method=MethodSpec.methodBuilder("String_Node_Str" + StringUtils.capitalize(columnDefinition.columnName)).addModifiers(Modifier.PUBLIC,Modifier.STATIC,Modifier.FINAL).addParameter(elementTypeName,ModelUtils.getVariable(false)).addParameter(columnDefinition.elementTypeName,"String_Node_Str");
        if (samePackage) {
          method.addStatement("String_Node_Str",ModelUtils.getVariable(false),columnDefinition.elementName,"String_Node_Str");
        }
 else {
          method.addStatement("String_Node_Str",className,StringUtils.capitalize(columnDefinition.columnName),ModelUtils.getVariable(false),"String_Node_Str");
        }
        typeBuilder.addMethod(method.build());
        count++;
      }
    }
    if (count > 0) {
      JavaFile.Builder javaFileBuilder=JavaFile.builder(packageName,typeBuilder.build());
      javaFileBuilder.build().writeTo(processingEnvironment.getFiler());
    }
  }
}

Fixed version (ground truth):
public void writePackageHelper(ProcessingEnvironment processingEnvironment) throws IOException {
  int count=0;
  if (!packagePrivateList.isEmpty()) {
    TypeSpec.Builder typeBuilder=TypeSpec.classBuilder(elementClassName.simpleName() + databaseDefinition.classSeparator + "String_Node_Str").addModifiers(Modifier.PUBLIC,Modifier.FINAL);
    for (    ColumnDefinition columnDefinition : packagePrivateList) {
      String helperClassName=manager.getElements().getPackageOf(columnDefinition.element).toString() + "String_Node_Str" + ClassName.get((TypeElement)columnDefinition.element.getEnclosingElement()).simpleName()+ databaseDefinition.classSeparator+ "String_Node_Str";
      if (columnDefinition instanceof ForeignKeyColumnDefinition) {
        TableDefinition tableDefinition=databaseDefinition.tableDefinitionMap.get(((ForeignKeyColumnDefinition)columnDefinition).referencedTableClassName);
        if (tableDefinition != null) {
          helperClassName=manager.getElements().getPackageOf(tableDefinition.element).toString() + "String_Node_Str" + ClassName.get((TypeElement)tableDefinition.element).simpleName()+ databaseDefinition.classSeparator+ "String_Node_Str";
        }
      }
      ClassName className=ClassName.bestGuess(helperClassName);
      if (PackagePrivateAccess.containsColumn(className,columnDefinition.columnName)) {
        MethodSpec.Builder method=MethodSpec.methodBuilder("String_Node_Str" + StringUtils.capitalize(columnDefinition.columnName)).addModifiers(Modifier.PUBLIC,Modifier.STATIC,Modifier.FINAL).addParameter(elementTypeName,ModelUtils.getVariable(false)).returns(columnDefinition.elementTypeName);
        boolean samePackage=ElementUtility.isInSamePackage(manager,columnDefinition.element,this.element);
        if (samePackage) {
          method.addStatement("String_Node_Str",ModelUtils.getVariable(false),columnDefinition.elementName);
        }
 else {
          method.addStatement("String_Node_Str",className,StringUtils.capitalize(columnDefinition.columnName),ModelUtils.getVariable(false));
        }
        typeBuilder.addMethod(method.build());
        method=MethodSpec.methodBuilder("String_Node_Str" + StringUtils.capitalize(columnDefinition.columnName)).addModifiers(Modifier.PUBLIC,Modifier.STATIC,Modifier.FINAL).addParameter(elementTypeName,ModelUtils.getVariable(false)).addParameter(columnDefinition.elementTypeName,"String_Node_Str");
        if (samePackage) {
          method.addStatement("String_Node_Str",ModelUtils.getVariable(false),columnDefinition.elementName,"String_Node_Str");
        }
 else {
          method.addStatement("String_Node_Str",className,StringUtils.capitalize(columnDefinition.columnName),ModelUtils.getVariable(false),"String_Node_Str");
        }
        typeBuilder.addMethod(method.build());
        count++;
      }
    }
    if (count > 0) {
      JavaFile.Builder javaFileBuilder=JavaFile.builder(packageName,typeBuilder.build());
      javaFileBuilder.build().writeTo(processingEnvironment.getFiler());
    }
  }
}