wp simplest fields如何只对特定页面添加字段

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   $download_page = array(116);

     $current_page_id = isset($_GET['post']) ? $_GET['post'] : (isset($_POST['post_ID']) ? $_POST['post_ID'] : 0);

      if (in_array($current_page_id, $download_page)) {

         $framework->add_field([
        'id' => 'download_file',
        'type' => 'group',
        'title' => 'Download File',
        'context' => 'post_meta',
        'post_type'  => 'page',
        'add_text' => 'Add File',
        'group_title' => 'Download',
        'fields' => [
            [
                'id' => 'file',
                'type' => 'file',
                'title' => 'File',
            ],
            
        ]
    ]);

      }