code: public void setDay(int v) {
      if (Date_Type.featOkTst && ((Date_Type)jcasType).casFeat_day == null)
        jcasType.jcas.throwFeatMissing("day", "de.julielab.jules.types.Date");
      jcasType.ll_cas.ll_setIntValue(addr, ((Date_Type)jcasType).casFeatCode_day, v);}
docs: setter for day - sets day of the month, C
  @generated
  @param v value to set into the feature