def begin_create_or_update_with_http_info(resource_group_name, namespace_name, parameters, custom_headers:nil)
      begin_create_or_update_async(resource_group_name, namespace_name, parameters, custom_headers:custom_headers).value!
    end
def begin_create_or_update_with_http_info(resource_group_name, namespace_name, parameters, custom_headers:nil)
      begin_create_or_update_async(resource_group_name, namespace_name, parameters, custom_headers:custom_headers).value!
    end
Creates or updates a service namespace. Once created, this namespace's
 resource manifest is immutable. This operation is idempotent.

 @param resource_group_name [String] Name of the Resource group within the
 Azure subscription.
 @param namespace_name [String] The namespace name.
 @param parameters [NamespaceCreateOrUpdateParameters] Parameters supplied to
 create a namespace resource.
 @param custom_headers [Hash{String => String}] A hash of custom headers that
 will be added to the HTTP request.

 @return [MsRestAzure::AzureOperationResponse] HTTP response information.