/**
  * Get response for invalid authentication credentials.
  *
  * @return Response
  */
 protected function getUnauthorizedResponse()
 {
     $authHeaderValue = $this->realm === null ? static::AUTHENTICATION_SCHEME : static::AUTHENTICATION_SCHEME . ' realm="' . $this->realm . '"';
     return $this->integration->createResponse(null, Response::HTTP_UNAUTHORIZED, [self::HEADER_WWW_AUTHENTICATE => $authHeaderValue]);
 }
 /**
  * @return Response
  */
 protected function createForbiddenResponse()
 {
     $response = $this->integration->createResponse(null, Response::HTTP_FORBIDDEN, []);
     return $response;
 }