code: public void setEntities(int i, Entity v) { 
      if (Document_Type.featOkTst && ((Document_Type)jcasType).casFeat_entities == null)
        jcasType.jcas.throwFeatMissing("entities", "de.julielab.jules.types.ace.Document");
      jcasType.jcas.checkArrayBounds(jcasType.ll_cas.ll_getRefValue(addr, ((Document_Type)jcasType).casFeatCode_entities), i);
      jcasType.ll_cas.ll_setRefArrayValue(jcasType.ll_cas.ll_getRefValue(addr, ((Document_Type)jcasType).casFeatCode_entities), i, jcasType.ll_cas.ll_getFSRef(v));}
docs: indexed setter for entities - sets an indexed value -
  @generated
  @param i index in the array to set
  @param v value to set into the array