static final String EDGE_ALREADY_EXISTS = "Edge %s already exists in the graph.";
  static final String ENDPOINTS_MISMATCH =
      "Mismatch: endpoints' ordering is not compatible with directionality of the graph";

  /** Singleton edge value for {@link Graph} implementations backed by {@link ValueGraph}s. */
  enum Presence {
    EDGE_EXISTS
  }

        if (opLambda != null) {
            opLambda.callback(builder);
        }
    }

    public void setCreatedTime_Exists() {
        setCreatedTime_Exists(null);
    }

    public void setCreatedTime_Exists(ConditionOptionCall<ExistsQueryBuilder> opLambda) {
        ExistsQueryBuilder builder = regExistsQ("createdTime");
        if (opLambda != null) {

	// "no running Istio pods in istio-system" for the first time
	_ = detectIstioVersionDiff(p, tag, ns, kubeClient, iop)
	exists := revtag.PreviousInstallExists(context.Background(), kubeClient.Kube())
	err = detectDefaultWebhookChange(p, kubeClient, iop, exists)
	if err != nil {
		return fmt.Errorf("failed to detect the default webhook change: %v", err)
	}

		// Validate volume does not exist.
		{
			volume: "i-dont-exist",
			path:   "",
			err:    errVolumeNotFound,
		},
		// TestXLStorage case - 2.
		// Validate bad condition file does not exist.
		{
			volume: "exists",
			path:   "as-file-not-found",
			err:    errFileNotFound,
		},
		// TestXLStorage case - 3.
		// Validate bad condition file exists as prefix/directory and

        if (opLambda != null) {
            opLambda.callback(builder);
        }
    }

    public void setCreatedBy_Exists() {
        setCreatedBy_Exists(null);
    }

    public void setCreatedBy_Exists(ConditionOptionCall<ExistsQueryBuilder> opLambda) {
        ExistsQueryBuilder builder = regExistsQ("createdBy");
        if (opLambda != null) {

        if (opLambda != null) {
            opLambda.callback(builder);
        }
    }

    public void setUrlId_Exists() {
        setUrlId_Exists(null);
    }

    public void setUrlId_Exists(ConditionOptionCall<ExistsQueryBuilder> opLambda) {
        ExistsQueryBuilder builder = regExistsQ("urlId");
        if (opLambda != null) {
            opLambda.callback(builder);

}

// Checks for PutObjectPart arguments validity, also validates if bucket exists.
func checkPutObjectPartArgs(ctx context.Context, bucket, object, uploadID string) error {
	return checkMultipartObjectArgs(ctx, bucket, object, uploadID)
}

// Checks for ListParts arguments validity, also validates if bucket exists.
func checkListPartsArgs(ctx context.Context, bucket, object, uploadID string) error {

    public void assertFileExistence(File dir, String filename, boolean shouldExist) {
        File file = new File(dir, filename);

        if (shouldExist) {
            assertTrue(file.exists());
        } else {
            assertFalse(file.exists());
        }
    }

    public void assertFileContents(File dir, String filename, String contentsTest, String encoding) throws IOException {

    // Exists to test that our framework doesn't run it:
    @SuppressWarnings("unused")
    @ExampleDerivedFeature.Require({
      ExampleDerivedFeature.DERIVED_FEATURE_1,
      ExampleDerivedFeature.DERIVED_FEATURE_2
    })
    public void testRequiringTwoExplicitDerivedFeatures() throws Exception {
      doNotActuallyRunThis();
    }

    // Exists to test that our framework doesn't run it:

        if (opLambda != null) {
            opLambda.callback(builder);
        }
    }

    public void setCreatedBy_Exists() {
        setCreatedBy_Exists(null);
    }

    public void setCreatedBy_Exists(ConditionOptionCall<ExistsQueryBuilder> opLambda) {
        ExistsQueryBuilder builder = regExistsQ("createdBy");
        if (opLambda != null) {