static parseFromNode(node) {
    if (!node.leadingComments) node.leadingComments = [{type: 'CommentBlock', value: ''}];
    const commentNode = node.leadingComments[node.leadingComments.length - 1];
    const tags = this.parse(commentNode);

    return {tags, commentNode};
  }
parse node to tags.
@param {ASTNode} node - node.
@returns {{tags: Tag[], commentNode: CommentNode}} parsed comment.