code: public Annotation getFirstEntity() {
      if (Cooccurrence_Type.featOkTst && ((Cooccurrence_Type)jcasType).casFeat_firstEntity == null)
        jcasType.jcas.throwFeatMissing("firstEntity", "ch.epfl.bbp.uima.types.Cooccurrence");
      return (Annotation)(jcasType.ll_cas.ll_getFSForRef(jcasType.ll_cas.ll_getRefValue(addr, ((Cooccurrence_Type)jcasType).casFeatCode_firstEntity)));}
docs: getter for firstEntity - gets
  @generated
  @return value of the feature