/// <summary>Snippet for EnableService</summary>
        public void EnableServiceRequestObject()
        {
            // Snippet: EnableService(EnableServiceRequest, CallSettings)
            // Create client
            ServiceUsageClient serviceUsageClient = ServiceUsageClient.Create();
            // Initialize request argument(s)
            EnableServiceRequest request = new EnableServiceRequest {
                Name = "",
            };
            // Make the request
            Operation <EnableServiceResponse, OperationMetadata> response = serviceUsageClient.EnableService(request);

            // Poll until the returned long-running operation is complete
            Operation <EnableServiceResponse, OperationMetadata> completedResponse = response.PollUntilCompleted();
            // Retrieve the operation result
            EnableServiceResponse result = completedResponse.Result;

            // Or get the name of the operation
            string operationName = response.Name;
            // This name can be stored, then the long-running operation retrieved later by name
            Operation <EnableServiceResponse, OperationMetadata> retrievedResponse = serviceUsageClient.PollOnceEnableService(operationName);

            // Check if the retrieved long-running operation has completed
            if (retrievedResponse.IsCompleted)
            {
                // If it has completed, then access the result
                EnableServiceResponse retrievedResult = retrievedResponse.Result;
            }
            // End snippet
        }