code:                     public void execute(String key, ActionMapping mapping) {
                          String location = key.substring(REDIRECT_ACTION_PREFIX
                                  .length());
                          ServletRedirectResult redirect = new ServletRedirectResult();
                          container.inject(redirect);
                          String extension = getDefaultExtension();
                          if (extension != null && extension.length() > 0) {
                              location += "." + extension;
                          }
                          redirect.setLocation(location);
                          mapping.setResult(redirect);
                      }
                  });
              }
          };
      }
  
      /**
       * Adds a parameter action.  Should only be called during initialization
       *
       * @param prefix          The string prefix to trigger the action
       * @param parameterAction The parameter action to execute
       * @since 2.1.0
       */
  