// The returned string is heap-allocated, and caller should call free() on it.
TF_CAPI_EXPORT extern const char* TF_GraphDebugString(TF_Graph* graph,
                                                      size_t* len);

// Returns the function content in a human-readable format, with length set in
// `len`. The format is subject to change in the future.
// The returned string is heap-allocated, and caller should call free() on it.
//

   * {@link MoreExecutors#directExecutor}. Normally, when the first future completes, all the other
   * tasks would be called recursively. Here, we detect that the delegate executor is executing
   * inline, and maintain a queue to dispatch tasks iteratively. There is one instance of this class
   * per call to submit() or submitAsync(), and each instance supports only one call to execute().
   *

        override fun connectionAcquired(
          call: Call,
          connection: Connection,
        ) {
          // We have the connection and it's in the pool. Let request2 proceed to make a connection.
          latch2.countDown()
        }
      }
    val request2Listener: EventListener =
      object : EventListener() {
        override fun connectStart(
          call: Call,
          inetSocketAddress: InetSocketAddress,

    Exception e = new Exception();
    TrustedListenableFutureTask<Integer> task =
        TrustedListenableFutureTask.create(
            new Callable<Integer>() {
              @Override
              public Integer call() throws Exception {
                throw e;
              }
            });
    task.run();
    assertTrue(task.isDone());
    assertFalse(task.isCancelled());
    ExecutionException executionException =

    assumeNetwork()

    val request = Request("https://www.google.com/robots.txt".toHttpUrl())

    val networkRequest =
      request
        .newBuilder()
        .build()

    val call = client.newCall(networkRequest)

    call.execute().use { response ->
      assertThat(response.code).isEqualTo(200)
      assertThat(response.cacheResponse).isNull()
    }

    val cachedCall = client.newCall(request)

    server.enqueue(new MockResponse(200, Headers.of(), "Hello, Java9!"));
    server.start();

    // Just check we can run code that depends on OkHttp types
    Call call = OkHttpCaller.callOkHttp(server.url("/"));

    try (Response response = call.execute();) {
      System.out.println(response.body().string());
    }
  }

  @Test
  public void testModules() {
    Module okHttpModule = OkHttpClient.class.getModule();

   */
  @CanIgnoreReturnValue
  boolean addEdge(EndpointPair<N> endpoints, E edge);

  /**
   * Removes {@code node} if it is present; all edges incident to {@code node} will also be removed.
   *
   * @return {@code true} if the network was modified as a result of this call
   */
  @CanIgnoreReturnValue
  boolean removeNode(N node);

  /**
   * Removes {@code edge} from this network, if it is present.
   *

		// Dummy Bucket Calls
		// GetBucketACL -- this is a dummy call.
		router.Methods(http.MethodGet).
			HandlerFunc(s3APIMiddleware(api.GetBucketACLHandler)).
			Queries("acl", "")
		// PutBucketACL -- this is a dummy call.
		router.Methods(http.MethodPut).
			HandlerFunc(s3APIMiddleware(api.PutBucketACLHandler)).
			Queries("acl", "")
		// GetBucketCors - this is a dummy call.
		router.Methods(http.MethodGet).

   */
  @CanIgnoreReturnValue
  boolean addEdge(EndpointPair<N> endpoints, E edge);

  /**
   * Removes {@code node} if it is present; all edges incident to {@code node} will also be removed.
   *
   * @return {@code true} if the network was modified as a result of this call
   */
  @CanIgnoreReturnValue
  boolean removeNode(N node);

  /**
   * Removes {@code edge} from this network, if it is present.
   *

     * must be between 1 and [Integer.MAX_VALUE] when converted to milliseconds.
     *
     * The call timeout spans the entire call: resolving DNS, connecting, writing the request body,
     * server processing, and reading the response body. If the call requires redirects or retries
     * all must complete within one timeout period.
     *
     * The default value is 0 which imposes no timeout.
     */