func (l *line) isHTMLComment() bool {
	return len(l.tokens) > 0 && l.tokens[0] == slash+slash
}
func (l *line) isHTMLComment() bool {
	return len(l.tokens) > 0 && l.tokens[0] == slash+slash
}
func ( l * line ) isHTMLComment ( ) bool { return len ( l . tokens ) > 0 && l . tokens [ 0 ] == slash + slash }
// isHTMLComment returns true if the line is an HTML comment.
isHTMLComment returns true if the line is an HTML comment .