Expanded class hierarchy of HtmlOutputPrinter in Drupal 8
- class \Drupal\TestTools\PhpUnitCompatibility\PhpUnit6\HtmlOutputPrinter extends \PHPUnit\TextUI\ResultPrinter uses HtmlOutputPrinterTrait
- class \Drupal\TestTools\PhpUnitCompatibility\PhpUnit6\SimpletestUiPrinter