func (sys *IAMSys) IsTempUser(name string) (bool, string, error) {
	if !sys.Initialized() {
		return false, "", errServerNotInitialized
	}

	u, found := sys.store.GetUser(name)
	if !found {
		return false, "", errNoSuchUser
	}
	cred := u.Credentials
	if cred.IsTemp() {
		return true, cred.ParentUser, nil
	}

	return false, "", nil
}

// IsServiceAccount - returns if given key is a service account