code: public function getFilesChunk($options = array(), $reverse = false)
      {
          $data = $this->__preparedRequest('file_list', 'GET', $options);
          $files_raw = (array)$data->results;
          $resultArr = array();
          foreach ($files_raw as $file_raw) {
              $resultArr[] = new File($file_raw->uuid, $this, $file_raw);
          }
          return $this->__preparePagedParams($data, $reverse, $resultArr);
      }
docs: Get portion of files from server respecting filters
  
  @param array $options
  @param bool $reverse
  @return array
  @throws \Exception