selectable.go
func (s *selectable) FirstByLink(text string) *Selection {
	return newSelection(s.session, s.selectors.Append(target.Link, text).At(0))
}
func (s *selectable) FirstByLink(text string) *Selection {
	return newSelection(s.session, s.selectors.Append(target.Link, text).At(0))
}
// FirstByLink finds the first anchor element by its text content.