如何在中自定义以下代码functions.php 为了在评论通知电子邮件中使用“新评论”作为主题，而不是默认的WordPress主题？

function wpd_comment_notification_text( $notify_message, $comment_id ){
// get the current comment and post data
$comment = get_comment( $comment_id );
$post = get_post( $comment->comment_post_ID );
// don\'t modify trackbacks or pingbacks
if( \'\' == $comment->comment_type ){
    // build the new message text
    $notify_message  = sprintf( __( \'A new reviewer wants to receive "%s"\' ), $post->post_title ) . "\\r\\n";
    $notify_message .= sprintf( __(\'Author : %1$s\'), $comment->comment_author ) . "\\r\\n";
    $notify_message .= sprintf( __(\'E-mail : %s\'), $comment->comment_author_email ) . "\\r\\n";
    $notify_message .= sprintf( __(\'When you are logged, you can see details about the reviewer reputation here: %s\'), get_comment_link( $comment_id ) ) . "\\r\\n";

    if ( user_can( $post->post_author, \'edit_comment\', $comment_id ) ) {
        if ( EMPTY_TRASH_DAYS )
            $notify_message .= sprintf( __(\'\'), admin_url("comment.php?action=trash&c=$comment_id") ) . "\\r\\n";
        else
            $notify_message .= sprintf( __(\'\'), admin_url("comment.php?action=delete&c=$comment_id") ) . "\\r\\n";
        $notify_message .= sprintf( __(\'\'), admin_url("comment.php?action=spam&c=$comment_id") ) . "\\r\\n";
    }
}
// return the notification text
return $notify_message;
}
add_filter( \'comment_notification_text\', \'wpd_comment_notification_text\', 20, 2 );