code: public function getDetails($groupId, $begin, $count)
      {
          $params = [
              'group_id' => intval($groupId),
              'begin' => intval($begin),
              'count' => intval($count),
          ];
  
          return $this->parseJSON('json', [self::API_GET_DETAIL, $params]);
      }
docs: Get details of a device group.
  
  @param int $groupId
  @param int $begin
  @param int $count
  
  @return \EasyWeChat\Support\Collection