Zendesk\API\Resources\Core\Users::findAll PHP Method

    public function findAll(array $params = [])
    {
        if (isset($params['organization_id'])) {
            $this->endpoint = "organizations/{$params['organization_id']}/users.json";
        } elseif (isset($params['group_id'])) {
            $this->endpoint = 'groups/' . $params['group_id'] . '/users.json';
        } else {
            $this->endpoint = 'users.json';
        }
        return $this->traitFindAll($params);
    }