code: public I_CmsEditHandler getEditHandler(CmsObject cms) {
  
          String schema = getSchema();
  
          try {
              CmsXmlContentDefinition contentDefinition = CmsXmlContentDefinition.unmarshal(cms, schema);
              // get the content handler for the resource type to create
              I_CmsXmlContentHandler handler = contentDefinition.getContentHandler();
              return handler.getEditHandler();
  
          } catch (CmsXmlException e) {
              LOG.error(e.getMessage(), e);
          }
          return null;
      }
docs: Returns the edit handler if configured.<p>
  
  @param cms the cms context
  
  @return the edit handler