code: public TOP getRef() {
      if (ConceptMention_Type.featOkTst && ((ConceptMention_Type)jcasType).casFeat_ref == null)
        jcasType.jcas.throwFeatMissing("ref", "de.julielab.jules.types.ConceptMention");
      return (TOP)(jcasType.ll_cas.ll_getFSForRef(jcasType.ll_cas.ll_getRefValue(addr, ((ConceptMention_Type)jcasType).casFeatCode_ref)));}
docs: getter for ref - gets The reference to the Concept, we use here the super type TOP in order to avoid the recursive dependencies between type systems
  @generated
  @return value of the feature