code: public void setLanguage(String v) {
      if (Header_Type.featOkTst && ((Header_Type)jcasType).casFeat_language == null)
        jcasType.jcas.throwFeatMissing("language", "de.julielab.jules.types.Header");
      jcasType.ll_cas.ll_setStringValue(addr, ((Header_Type)jcasType).casFeatCode_language, v);}
docs: setter for language - sets The language of the document, O
  @generated
  @param v value to set into the feature