docs: protected void addSearchSetting(CmsXmlContentDefinition contentDefinition, String elementName, Boolean value)
      throws CmsXmlException {
  
          if (contentDefinition.getSchemaType(elementName) == null) {
              throw new CmsXmlException(
                  Messages.get().container(Messages.ERR_XMLCONTENT_INVALID_ELEM_SEARCHSETTINGS_1, elementName));
          }
          // store the search exclusion as defined
          m_searchSettings.put(elementName, value);
      }