public static function create($comment) {
    $block_comment = new LineCommentBlockNode();
    $comment = trim($comment);
    $lines = array_map('rtrim', explode("\n", $comment));
    foreach ($lines as $line) {
      $comment_node = new CommentNode(T_COMMENT, '// ' . $line . "\n");
      $block_comment->addChild($comment_node);
    }
    return $block_comment;
  }