function responseInterceptor()
	{
		return function (callable $handler) {
			return function (
				RequestInterface $request,
				array $options
			) use ($handler) {
				$promise = $handler($request, $options);
				return $promise->then(
					function (ResponseInterface $response){
						if($response->getStatusCode() == 401){

							$auth = new \ILT\Auth();

							$tokenStatus = $auth->refresh_token();

							if(isset($tokenStatus->error) ){
								$response = new \GuzzleHttp\Psr7\Response(
									401,
									["'Content-Type' = 'application/json'"],
									json_encode($tokenStatus)
								);
							}else{

								$response = new \GuzzleHttp\Psr7\Response(
									401,
									["'Content-Type' = 'application/json'"],
									json_encode([
										'error' => 'permission_denied',
										'error_description' => 'Token expired',
										]
									));
								}


						}
						return $response;
					}
				);
			};
		};
	}