 
   func testServerStreaming() {
     let message = "foo bar baz"
-
 
     var expectedData = Data()
     var index = 0

        XCTAssertNil(error)
        if let data = data {
          XCTAssertEqual(String(data: data, encoding: .utf8), expectedResponse)
          responses += 1

          if responses == numberOfRequests {
            completionHandlerExpectation.fulfill()
          }
        }
      }
    }

    let numberOfRequests = 2_000

    let completionHandlerExpectation = expectation(description: "completion handler called")
    completionHandlerExpectation.expectedFulfillmentCount = numberOfRequests
    completionHandlerExpectation.assertForOverFulfill = true

    for i in 0..<numberOfRequests {
      let message = "foo \(i)"
