code: protected function methodAlert($args, $meta)
      {
          $attribs = array(
              'class' => 'alert alert-'.$meta['class'],
              'data-channel' => $meta['channel'],
              'role' => 'alert',
          );
          if ($meta['dismissible']) {
              $attribs['class'] .= ' alert-dismissible';
              $args[0] = '<button type="button" class="close" data-dismiss="alert" aria-label="Close">'
                  .'<span aria-hidden="true">&times;</span>'
                  .'</button>'
                  .$args[0];
          }
          return $this->debug->utilities->buildTag('div', $attribs, $args[0]);
      }
docs: Handle alert method
  
  @param array $args arguments
  @param array $meta meta info
  
  @return array array($method, $args)