code: public function paintGroupStart($group, $size)
      {
          $this->group = self::escapeVal($group);
          if ($this->cc) {
              if (extension_loaded('xdebug')) {
                  xdebug_start_code_coverage(XDEBUG_CC_UNUSED | XDEBUG_CC_DEAD_CODE);
              }
          }
      }
docs: Stashes the name of the test suite. Starts test coverage if enabled.
  
  @param string $group     Name of test or other label.
  @param int $size     Number of test cases starting.