public void CreatesNamespace()
    {
        var namespaceId = _fixture.RandomResourceId;

        _fixture.TempNamespaceIds.Add(namespaceId);
        // Run the sample code.
        var createNamespaceSample = new CreateNamespaceSample();
        var result = createNamespaceSample.CreateNamespace(_fixture.ProjectId, _fixture.LocationId, namespaceId);

        // Get the namespace.
        var namespaceName = NamespaceName.FromProjectLocationNamespace(_fixture.ProjectId, _fixture.LocationId, namespaceId);
        RegistrationServiceClient registrationServiceClient = RegistrationServiceClient.Create();
        var namespaceVal = registrationServiceClient.GetNamespace(namespaceName);

        Assert.Contains(namespaceVal.Name, result.Name);
    }
    public void DeletesNamespace()
    {
        // Setup namespace for the test.
        var namespaceId = _fixture.RandomResourceId;

        _fixture.CreateNamespace(namespaceId);
        // Run the sample code.
        var deleteNamespaceSample = new DeleteNamespaceSample();

        deleteNamespaceSample.DeleteNamespace(_fixture.ProjectId, _fixture.LocationId, namespaceId);

        // Try to get the namespace.
        RegistrationServiceClient registrationServiceClient = RegistrationServiceClient.Create();
        var namespaceName = NamespaceName.FromProjectLocationNamespace(_fixture.ProjectId, _fixture.LocationId, namespaceId);
        var exception     = Assert.Throws <RpcException>(() => registrationServiceClient.GetNamespace(namespaceName));

        Assert.Equal(StatusCode.NotFound, exception.StatusCode);
    }