public async Task CreateNamespaceAndGetEventhubCollection()
        {
            _resourceGroup = await CreateResourceGroupAsync();

            string namespaceName = await CreateValidNamespaceName("testnamespacemgmt");

            EventHubNamespaceCollection namespaceCollection = _resourceGroup.GetEventHubNamespaces();
            EventHubNamespace           eHNamespace         = (await namespaceCollection.CreateOrUpdateAsync(true, namespaceName, new EventHubNamespaceData(DefaultLocation))).Value;

            _schemaGroupCollection = eHNamespace.GetSchemaGroups();
        }