if (wrapper.getCause() instanceof Error) {
        throw new ExecutionError((Error) wrapper.getCause());
      }
      /*
       * It's an Exception. (Or it's a non-Error, non-Exception Throwable. From my survey of such
       * classes, I believe that most users intended to extend Exception, so we'll treat it like an
       * Exception.)
       */
      throw new UncheckedExecutionException(wrapper.getCause());
    }

	subrouter.Methods(http.MethodPost).Path(peerRESTVersionPrefix + peerRESTMethodDevNull).HandlerFunc(h(server.DevNull))

	logger.FatalIf(consoleLogRPC.RegisterNoInput(gm, server.ConsoleLogHandler), "unable to register handler")
	logger.FatalIf(deleteBucketMetadataRPC.Register(gm, server.DeleteBucketMetadataHandler), "unable to register handler")

			poolObjInfos[i] = pinfo
		}(i, pool, poolOpts[i])
	}
	wg.Wait()

	// Sort the objInfos such that we always serve latest
	// this is a defensive change to handle any duplicate
	// content that may have been created, we always serve
	// the latest object.
	sort.Slice(poolObjInfos, func(i, j int) bool {
		mtime1 := poolObjInfos[i].ObjInfo.ModTime
		mtime2 := poolObjInfos[j].ObjInfo.ModTime

  fun multipleDnsLookupsForSingleCall() {
    server.enqueue(
      MockResponse
        .Builder()
        .code(301)
        .setHeader("Location", "http://www.fakeurl:" + server.port)
        .build(),
    )
    server.enqueue(MockResponse())
    val dns = FakeDns()
    dns["fakeurl"] = client.dns.lookup(server.hostName)
    dns["www.fakeurl"] = client.dns.lookup(server.hostName)
    client =
      client

            "uid": "${DS_PROMETHEUS}"
          },
          "exemplar": true,
          "expr": "sum by (server) (rate(minio_s3_traffic_received_bytes{job=~\"$scrape_jobs\"}[$__rate_interval]))",
          "interval": "1m",
          "intervalFactor": 2,
          "legendFormat": "Data Received [{{server}}]",
          "refId": "A"
        }
      ],
      "title": "S3 API Ingress Rate ",

	Disks        EndpointServerPools
	AccessKey    string
	SecretKey    string
	Server       *httptest.Server
	Obj          ObjectLayer
	cancel       context.CancelFunc
	rawDiskPaths []string
}

// UnstartedTestServer - Configures a temp FS/Erasure backend,
// initializes the endpoints and configures the test server.
// The server should be started using the Start() method.

```

MinIO server also supports [NATS Streaming mode](http://nats.io/documentation/streaming/nats-streaming-intro/) that offers additional functionality like `At-least-once-delivery`, and `Publisher rate limiting`. To configure MinIO server to send notifications to NATS Streaming server, update the MinIO server configuration file as follows:

  @ArgumentsSource(ProtocolParamProvider::class)
  fun connectionReuse(protocol: Protocol) {
    setUp(protocol)
    server.enqueue(MockResponse(body = "ABCDEF"))
    server.enqueue(MockResponse(body = "GHIJKL"))
    val call1 = client.newCall(Request(server.url("/r1")))
    val call2 = client.newCall(Request(server.url("/r1")))
    val response1 = call1.execute()
    val response2 = call2.execute()

            "uid": "${DS_PROMETHEUS}"
          },
          "exemplar": true,
          "expr": "sum by (server) (minio_node_replication_average_active_workers{job=\"$scrape_jobs\"})",
          "interval": "1m",
          "intervalFactor": 2,
          "legendFormat": "{{server}}",
          "refId": "A"
        }
      ],
      "title": "Avg. Active Workers",
      "type": "timeseries"
    },

                log.info("Initialized witness support with server: {}", witnessServer);
            }
        } catch (Exception e) {
            log.warn("Failed to initialize witness support", e);
        }
    }

    /**
     * Discover witness service for the current server
     *
     * @return witness server address or null if not found
     * @throws IOException if discovery fails