Uploadcare\Api::getGroupList PHP Method

    public function getGroupList($from = null)
    {
        $params = array();
        if ($from !== null) {
            $params['from'] = $from;
        }
        $data = $this->__preparedRequest('group_list', 'GET', $params);
        $groups = (array) $data->results;
        $result = array();
        foreach ($groups as $group) {
            $result[] = new Group($group->id, $this);
        }
        return $result;
    }