public function present() {
    $value = $this->get();

    if ( ! \is_string( $value ) || $value === '' ) {
      return '';
    }

    
/**
 * There may be some classes that are derived from this class that do not use the $key property
 * in their $tag_format string. In that case the key property will simply not be used.
 */
    return \sprintf(
      $this->tag_format,
      $this->escape_value( $value ),
      $this->key,
      \is_admin_bar_showing() ? ' class="yoast-seo-meta-tag"' : ''
    );
  }