private function post_to_news_sitemap_item( $post ) {

    
/**
 * Filter condition to allow skipping specific posts in news sitemap.
 *
 * @module sitemaps
 *
 * @since 3.9.0
 *
 * @param bool    $skip Current boolean. False by default, so no post is skipped.
 * @param WP_POST $post Current post object.
 */
    if ( apply_filters( 'jetpack_sitemap_news_skip_post', false, $post ) ) {
      return array(
        'xml' => null,
      );
    }

    $url = get_permalink( $post );

    /*
		 * Spec requires the URL to be <=2048 bytes.
		 * In practice this constraint is unlikely to be violated.
		 */
    if ( 2048 < strlen( $url ) ) {
      $url = home_url() . '/?p=' . $post->ID;
    }

    /*
		 * Trim the locale to an ISO 639 language code as required by Google.
		 * Special cases are zh-cn (Simplified Chinese) and zh-tw (Traditional Chinese).
		 * @link https://www.loc.gov/standards/iso639-2/php/code_list.php
		 */
    $language = strtolower( get_locale() );

    if ( in_array( $language, array( 'zh_tw', 'zh_cn' ), true ) ) {
      $language = str_replace( '_', '-', $language );
    } else {
      $language = preg_replace( '/(_.*)$/i', '', $language );
    }

    $item_array = array(
      'url' => array(
        'loc'       => $url,
        'lastmod'   => jp_sitemap_datetime( $post->post_modified_gmt ),
        'news:news' => array(
          'news:publication'      => array(
            'news:name'     => html_entity_decode( get_bloginfo( 'name' ) ),
            'news:language' => $language,
          ),
          
/** This filter is already documented in core/wp-includes/feed.php */
          'news:title'            => apply_filters( 'the_title_rss', $post->post_title ),
          'news:publication_date' => jp_sitemap_datetime( $post->post_date_gmt ),
          'news:genres'           => 'Blog',
        ),
      ),
    );

    
/**
 * Filter associative array with data to build <url> node
 * and its descendants for current post in news sitemap.
 *
 * @module sitemaps
 *
 * @since 3.9.0
 *
 * @param array $item_array Data to build parent and children nodes for current post.
 * @param int   $post_id Current post ID.
 */
    $item_array = apply_filters(
      'jetpack_sitemap_news_sitemap_item',
      $item_array,
      $post->ID
    );

    return array(
      'xml' => $item_array,
    );
  }