use Org\Mxchange\CoreFramework\Registry\GenericRegistry;
use Org\Mxchange\CoreFramework\Request\Requestable;
use Org\Mxchange\CoreFramework\Response\Responseable;
+use Org\Mxchange\CoreFramework\User\UsernameMissingException;
/**
* A concrete filter for verfying the username. This filter may intercept the