code: public StringArray getCategories() {
      if (GOMention_Type.featOkTst && ((GOMention_Type)jcasType).casFeat_categories == null)
        jcasType.jcas.throwFeatMissing("categories", "de.julielab.jules.types.GOMention");
      return (StringArray)(jcasType.ll_cas.ll_getFSForRef(jcasType.ll_cas.ll_getRefValue(addr, ((GOMention_Type)jcasType).casFeatCode_categories)));}
docs: getter for categories - gets created for the shared task, here we add the group
  @generated
  @return value of the feature