//
	// If RoundTrip returns an error, it cancels this context before returning.
	//
	// If RoundTrip returns no error:
	//   - For an HTTP/1 request, persistConn.readLoop cancels this context
	//     after reading the request body.
	//   - For an HTTP/2 request, RoundTrip cancels this context after the HTTP/2
	//     RoundTripper returns.
	ctx, cancel := context.WithCancelCause(req.Context())

	}
	return nil
}

// delete canceler from the map, cancel job if requested
func (j *BatchJobPool) canceler(jobID string, cancel bool) error {
	if j == nil {
		return errInvalidArgument
	}
	j.jmu.Lock()
	defer j.jmu.Unlock()
	if canceler, ok := j.jobCancelers[jobID]; ok {
		if cancel {
			canceler()
		}
	}
	delete(j.jobCancelers, jobID)
	return nil
}

      this.state = state;
    }

    @Override
    public boolean cancel(boolean interruptIfRunning) {
      InCompletionOrderState<T> localState = state;
      if (super.cancel(interruptIfRunning)) {
        /*
         * requireNonNull is generally safe: If cancel succeeded, then this Future was still
         * pending, so its `state` field hasn't been nulled out yet.
         *

      this.state = state;
    }

    @Override
    public boolean cancel(boolean interruptIfRunning) {
      InCompletionOrderState<T> localState = state;
      if (super.cancel(interruptIfRunning)) {
        /*
         * requireNonNull is generally safe: If cancel succeeded, then this Future was still
         * pending, so its `state` field hasn't been nulled out yet.
         *

	}

	// Test that Request.Cancel is propagated between requests (Issue 14053)
	creq, _ := NewRequest("HEAD", ts.URL, nil)
	cancel := make(chan struct{})
	creq.Cancel = cancel
	if _, err := c.Do(creq); err != nil {
		t.Fatal(err)
	}
	if lastReq == nil {
		t.Fatal("didn't see redirect")
	}
	if lastReq.Cancel != cancel {
		t.Errorf("expected lastReq to have the cancel channel set on the initial req")
	}

    override fun dispatch(request: RecordedRequest): MockResponse {
      // This guarantees a deterministic sequence when handling the canceled request:
      // 1. Server reads request and dequeues first response
      // 2. Client cancels request
      // 3. Server tries to send response on the canceled stream
      // Otherwise, there is no guarantee for the sequence. For example, the server may use the

				runAllIAMSTSTests(testCase, &check{t, testCase.serverType})
			},
		)
	}
}

func (s *TestSuiteIAM) TestSTSServiceAccountsWithUsername(c *check) {
	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
	defer cancel()

	bucket := "dillon-bucket"
	err := s.client.MakeBucket(ctx, bucket, minio.MakeBucketOptions{})
	if err != nil {
		c.Fatalf("bucket create error: %v", err)
	}

          // Note: The only way this CAS could fail is if cancel() has raced with us. That is ok.
          boolean unused = ATOMIC_HELPER.casValue(this, valueToSet, failure);
        }
        return true;
      }
      localValue = value; // we lost the cas, fall through and maybe cancel
    }
    // The future has already been set to something. If it is cancellation we should cancel the
    // incoming future.

          // Note: The only way this CAS could fail is if cancel() has raced with us. That is ok.
          boolean unused = ATOMIC_HELPER.casValue(this, valueToSet, failure);
        }
        return true;
      }
      localValue = value; // we lost the cas, fall through and maybe cancel
    }
    // The future has already been set to something. If it is cancellation we should cancel the
    // incoming future.

      client.newCall(
        Request.Builder()
          .url(server.url("/"))
          .build(),
      )
    call.cancel()
    call.cancel()
    assertThat(listener.recordedEventTypes()).containsExactly("Canceled")
  }

  private fun assertSuccessfulEventOrder(responseMatcher: Matcher<Response?>?) {
    val call =
      client.newCall(
        Request.Builder()
          .url(server.url("/"))