code: public void setHeadings(int i, String v) { 
      if (DataTable_Type.featOkTst && ((DataTable_Type)jcasType).casFeat_headings == null)
        jcasType.jcas.throwFeatMissing("headings", "ch.epfl.bbp.uima.types.DataTable");
      jcasType.jcas.checkArrayBounds(jcasType.ll_cas.ll_getRefValue(addr, ((DataTable_Type)jcasType).casFeatCode_headings), i);
      jcasType.ll_cas.ll_setStringArrayValue(jcasType.ll_cas.ll_getRefValue(addr, ((DataTable_Type)jcasType).casFeatCode_headings), i, v);}
docs: indexed setter for headings - sets an indexed value -
  @generated
  @param i index in the array to set
  @param v value to set into the array