action.go
func newAction(ln *line, rslt *result, src *source, parent element, opts *Options) *action {
	return &action{
		elementBase: newElementBase(ln, rslt, src, parent, opts),
	}
}
func newAction(ln *line, rslt *result, src *source, parent element, opts *Options) *action {
	return &action{
		elementBase: newElementBase(ln, rslt, src, parent, opts),
	}
}
// newAction creates and returns an action.