// applies to. The format is "group/version" just like the top-level
  // APIVersion field. It is necessary to track the version of a field
  // set because it cannot be automatically converted.
  optional string apiVersion = 3;

  // Time is the timestamp of when the ManagedFields entry was added. The
  // timestamp will also be updated if a field is added, the manager

  // 2. The returned futures shouldn't unnecessarily 'pin' their inputs after completion.
  //
  // A consequence of these requirements is that the delegate futures cannot be stored in
  // final fields.
  //
  // For simplicity the rest of this description will discuss Futures.catching since it is the

  DefineFunction("MyGrad2", &grad_func2);

  // func cannot be null
  TF_GraphCopyFunction(host_graph_, nullptr, func_, s_);
  EXPECT_EQ(TF_INVALID_ARGUMENT, TF_GetCode(s_));
  EXPECT_EQ(string("'func' argument to TF_GraphCopyFunction cannot be null"),
            string(TF_Message(s_)));

  // Cannot change gradient
  TF_GraphCopyFunction(host_graph_, func_, grad_func1, s_);

		return
	}
	if ok {
		writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, errIAMActionNotAllowed), r.URL)
		return
	}

	// When the user is root credential you are not allowed to
	// remove the root user. Also you cannot delete yourself.
	if accessKey == globalActiveCred.AccessKey || accessKey == cred.AccessKey {
		writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, errIAMActionNotAllowed), r.URL)
		return
	}

func preSignV4(req *http.Request, accessKeyID, secretAccessKey string, expires int64) error {
	// Presign is not needed for anonymous credentials.
	if accessKeyID == "" || secretAccessKey == "" {
		return errors.New("Presign cannot be generated without access and secret keys")
	}

	region := globalSite.Region
	date := UTCNow()
	scope := getScope(date, region)
	credential := fmt.Sprintf("%s/%s", accessKeyID, scope)

	// Set URL query.

        ModelResolver modelResolver = getModelResolver(request);
        Objects.requireNonNull(
                modelResolver,
                String.format(
                        "request.modelResolver cannot be null (parent POM %s and POM %s)",
                        ModelProblemUtils.toId(groupId, artifactId, version),
                        ModelProblemUtils.toSourceHint(childModel)));

        ModelSource modelSource;

    public boolean equals(@CheckForNull Object object) {
      // Cannot use key and value equivalence
      if (object instanceof Entry) {
        Entry<?, ?> that = (Entry<?, ?>) object;
        return key.equals(that.getKey()) && value.equals(that.getValue());
      }
      return false;
    }

    @Override
    public int hashCode() {
      // Cannot use key and value equivalence

    snapshotAfterCommit.next().close()
  }

  @ParameterizedTest
  @ArgumentsSource(FileSystemParamProvider::class)
  fun `Windows cannot read while writing`(parameters: Pair<FileSystem, Boolean>) {
    setUp(parameters.first, parameters.second)
    Assumptions.assumeTrue(windows)

    set("k1", "a", "a")
    val editor = cache.edit("k1")!!

                        Version.BASE,
                        "parent.artifactId",
                        null,
                        "must be changed"
                                + ", the parent element cannot have the same groupId:artifactId as the project.",
                        parent);
            }

            if (equals("LATEST", parent.getVersion()) || equals("RELEASE", parent.getVersion())) {

// instead of the original node's output.
//
// Callers must also satisfy the following constraints:
// - `inputs` cannot refer to TF_Outputs within a control flow context. For
//   example, one cannot use the output of "switch" node as input.
// - `inputs` and `outputs` cannot have reference types. Reference types are
//   not exposed through C API and are being replaced with Resources. We support