public function screenshot(WebDriver $webDriver, $case = 'undefined')
 {
     $this->_createScreenShotDirIfNotExists();
     $screenName = date('d|m|y|H|i|s') . '|' . $case . '.png';
     file_put_contents($this->screenshotDir . DIRECTORY_SEPARATOR . $screenName, $webDriver->takeScreenshot());
     $buildNumber = $this->suiteSettings->getBuildNumber();
     $buildNumberPath = $buildNumber !== '' ? $buildNumber . DIRECTORY_SEPARATOR : '';
     $loggingDirectoryName = $this->suiteSettings->getLoggingDirectoryName();
     $loggingDirectoryNamePath = $loggingDirectoryName !== '' ? $loggingDirectoryName . DIRECTORY_SEPARATOR : '';
     return rtrim($buildNumberPath . $loggingDirectoryNamePath, DIRECTORY_SEPARATOR) . DIRECTORY_SEPARATOR . 'screenshots' . DIRECTORY_SEPARATOR . $screenName;
 }