code: public void setHead(Token v) {
      if (DependencyRelation_Type.featOkTst && ((DependencyRelation_Type)jcasType).casFeat_head == null)
        jcasType.jcas.throwFeatMissing("head", "de.julielab.jules.types.DependencyRelation");
      jcasType.ll_cas.ll_setRefValue(addr, ((DependencyRelation_Type)jcasType).casFeatCode_head, jcasType.ll_cas.ll_getFSRef(v));}
docs: setter for head - sets Head (Token) of the analyzed dependency relation, C
  @generated
  @param v value to set into the feature