code: public void setFirstIds(StringArray v) {
      if (Cooccurrence_Type.featOkTst && ((Cooccurrence_Type)jcasType).casFeat_firstIds == null)
        jcasType.jcas.throwFeatMissing("firstIds", "ch.epfl.bbp.uima.types.Cooccurrence");
      jcasType.ll_cas.ll_setRefValue(addr, ((Cooccurrence_Type)jcasType).casFeatCode_firstIds, jcasType.ll_cas.ll_getFSRef(v));}
docs: setter for firstIds - sets A list of string ids to identify the first occurrence
  @generated
  @param v value to set into the feature