code: public void setDocid(String v) {
      if (Document_Type.featOkTst && ((Document_Type)jcasType).casFeat_docid == null)
        jcasType.jcas.throwFeatMissing("docid", "de.julielab.jules.types.ace.Document");
      jcasType.ll_cas.ll_setStringValue(addr, ((Document_Type)jcasType).casFeatCode_docid, v);}
docs: setter for docid - sets
  @generated
  @param v value to set into the feature