original_string: protected function get_error_message($message = null) {
          global $OUTPUT;
  
          if (empty($message)) {
              $message = get_string('apierror', 'block_tag_youtube');
          }
          return $OUTPUT->notification($message);
      }
code: protected function get_error_message($message = null) {
          global $OUTPUT;
  
          if (empty($message)) {
              $message = get_string('apierror', 'block_tag_youtube');
          }
          return $OUTPUT->notification($message);
      }
code_tokens: protected function get_error_message ( $ message = null ) { global $ OUTPUT ; if ( empty ( $ message ) ) { $ message = get_string ( 'apierror' , 'block_tag_youtube' ) ; } return $ OUTPUT -> notification ( $ message ) ; }
docstring: Returns an error message.
  
  Useful when the block is not properly set or something goes wrong.
  
  @param string $message The message to display.
  @return string HTML
docstring_tokens: Returns an error message .