code: public void addEditorCssHandler(String editorCssHandlerClassName) {
  
          try {
              I_CmsEditorCssHandler editorCssHandler = (I_CmsEditorCssHandler)Class.forName(
                  editorCssHandlerClassName).newInstance();
              m_editorCssHandlers.add(editorCssHandler);
              if (CmsLog.INIT.isInfoEnabled()) {
                  CmsLog.INIT.info(
                      Messages.get().getBundle().key(Messages.INIT_EDITOR_CSSHANDLER_CLASS_1, editorCssHandlerClassName));
              }
          } catch (Exception e) {
              LOG.error(
                  Messages.get().getBundle().key(Messages.LOG_INVALID_EDITOR_CSSHANDLER_1, editorCssHandlerClassName),
                  e);
          }
      }
docs: Adds an editor CSS handler class to the list of handlers.<p>
  
  @param editorCssHandlerClassName full class name of the css handler class