code: public function paintGroupStart($test_name, $size)
      {
          $numberOfReporters = count($this->reporters);
          for ($i = 0; $i < $numberOfReporters; $i++) {
              $this->reporters[$i]->paintGroupStart($test_name, $size);
          }
      }
docs: Paints the start of a group test.
  
  @param string $test_name     Name of test or other label.
  @param int $size         Number of test cases starting.