code: public void setSyn(String v) {
      if (GENIAConstituent_Type.featOkTst && ((GENIAConstituent_Type)jcasType).casFeat_syn == null)
        jcasType.jcas.throwFeatMissing("syn", "de.julielab.jules.types.GENIAConstituent");
      jcasType.ll_cas.ll_setStringValue(addr, ((GENIAConstituent_Type)jcasType).casFeatCode_syn, v);}
docs: setter for syn - sets Marks coordinations, O
  @generated
  @param v value to set into the feature