code: protected void init() {
  
          m_elementMappings = new HashMap<String, List<String>>();
          m_elementWidgets = new HashMap<String, I_CmsWidget>();
          m_validationErrorRules = new HashMap<String, String>();
          m_validationErrorMessages = new HashMap<String, String>();
          m_validationWarningRules = new HashMap<String, String>();
          m_validationWarningMessages = new HashMap<String, String>();
          m_defaultValues = new HashMap<String, String>();
          m_configurationValues = new HashMap<String, String>();
          m_searchSettings = new HashMap<String, Boolean>();
          m_relations = new HashMap<String, CmsRelationType>();
          m_relationChecks = new HashMap<String, Boolean>();
          m_previewLocation = null;
          m_modelFolder = null;
          m_tabs = new ArrayList<CmsXmlContentTab>();
          m_cssHeadIncludes = new LinkedHashSet<String>();
          m_jsHeadIncludes = new LinkedHashSet<String>();
          m_settings = new LinkedHashMap<String, CmsXmlContentProperty>();
          m_titleMappings = new ArrayList<String>(2);
          m_formatters = new ArrayList<CmsFormatterBean>();
          m_searchFields = new HashMap<String, CmsSearchField>();
          m_searchFieldsPage = new HashMap<String, CmsSearchField>();
          m_allowedTemplates = new CmsDefaultSet<String>();
          m_allowedTemplates.setDefaultMembership(true);
          m_displayTypes = new HashMap<String, DisplayType>();
          m_synchronizations = new ArrayList<String>();
          m_editorChangeHandlers = new ArrayList<I_CmsXmlContentEditorChangeHandler>();
          m_nestedFormatterElements = new HashSet<String>();
          try (
          InputStream stream = CmsDefaultXmlContentHandler.class.getResourceAsStream("simple-searchsetting-configs.st")) {
              m_searchTemplateGroup = CmsStringUtil.readStringTemplateGroup(stream);
          } catch (IOException e) {
              LOG.error(e.getLocalizedMessage(), e);
          }
      }
docs: Called when this content handler is initialized.<p>