AuthBucket\OAuth2\GrantType\PasswordGrantTypeHandler::handle PHP Метод

    public function handle(Request $request)
    {
        // Fetch client_id from authenticated token.
        $clientId = $this->checkClientId();
        // Check resource owner credentials
        $username = $this->checkUsername($request);
        // Check and set scope.
        $scope = $this->checkScope($request, $clientId, $username);
        // Generate access_token, store to backend and set token response.
        $parameters = $this->tokenTypeHandlerFactory->getTokenTypeHandler()->createAccessToken($clientId, $username, $scope);
        return JsonResponse::create($parameters, 200, ['Cache-Control' => 'no-store', 'Pragma' => 'no-cache']);
    }