code: private function preprocessData($data)
      {
          if (is_array($data) && !array_key_exists(self::PARAM_PER_PAGE, $data)) {
              $data[self::PARAM_PER_PAGE] = CanvasArray::MAXIMUM_PER_PAGE;
          }
          return $data;
      }
docs: Preprocess API call parameters before use
  
  Force maximum response page size, if not already defined.
  
  @param string[] $data Array of parameters for the next API call
  
  @return string[] Updated array of parameters
  
  @see CanvasArray::MAXIMUM_PER_PAGE Maximum number of responses per page
  @see CanvasPest::PARAM_PER_PAGE Page size parameter