public function testCanPickCorrectProvidersStack()
 {
     $configuration = new DefaultConfiguration();
     $configuration->setDebug(true);
     $configuration->configure();
     $this->assertArrayHasKey('debugbar', $configuration->getDefinitionProviders());
     $configuration->setDebug(false);
     $configuration->configure();
     $this->assertArrayNotHasKey('debugbar', $configuration->getDefinitionProviders());
 }