runner/run.go
func (r *Runner) RunGroup(groups ...*parse.Group) {
	for _, group := range groups {
		r.runGroup(group)
	}
}
func (r *Runner) RunGroup(groups ...*parse.Group) {
	for _, group := range groups {
		r.runGroup(group)
	}
}
// RunGroup runs a parse.Group.
// Consider RunFile instead.