func (a *API) SearchUsers(filterCriteria *SearchFilterType) (*[]User, error) {
	q := url.Values{}

	if filterCriteria != nil && len(*filterCriteria) > 0 {
		for filter, criteria := range *filterCriteria {
			for _, val := range criteria {
				q.Add(filter, val)
			}
		}
	}

	if q.Encode() == "" {
		return a.FetchUsers()
	}

	reqURL := url.URL{
		Path:     config.UserPrefix,
		RawQuery: q.Encode(),
	}

	result, err := a.Get(reqURL.String())
	if err != nil {
		return nil, fmt.Errorf("[ERROR] API call error %+v", err)
	}

	var users []User
	if err := json.Unmarshal(result, &users); err != nil {
		return nil, err
	}

	return &users, nil
}
func (a *API) SearchUsers(filterCriteria *SearchFilterType) (*[]User, error) {
	q := url.Values{}

	if filterCriteria != nil && len(*filterCriteria) > 0 {
		for filter, criteria := range *filterCriteria {
			for _, val := range criteria {
				q.Add(filter, val)
			}
		}
	}

	if q.Encode() == "" {
		return a.FetchUsers()
	}

	reqURL := url.URL{
		Path:     config.UserPrefix,
		RawQuery: q.Encode(),
	}

	result, err := a.Get(reqURL.String())
	if err != nil {
		return nil, fmt.Errorf("[ERROR] API call error %+v", err)
	}

	var users []User
	if err := json.Unmarshal(result, &users); err != nil {
		return nil, err
	}

	return &users, nil
}
// SearchUsers returns users matching a filter (search queries
// are not suppoted by the user endpoint). Pass nil as filter for all
// users available to the API Token.