/// <summary>Snippet for DeleteAsync</summary>
        public async Task DeleteAsync()
        {
            // Snippet: DeleteAsync(string, string, string, CallSettings)
            // Additional: DeleteAsync(string, string, string, CancellationToken)
            // Create client
            VpnTunnelsClient vpnTunnelsClient = await VpnTunnelsClient.CreateAsync();

            // Initialize request argument(s)
            string project   = "";
            string region    = "";
            string vpnTunnel = "";
            // Make the request
            lro::Operation <Operation, Operation> response = await vpnTunnelsClient.DeleteAsync(project, region, vpnTunnel);

            // Poll until the returned long-running operation is complete
            lro::Operation <Operation, Operation> completedResponse = await response.PollUntilCompletedAsync();

            // Retrieve the operation result
            Operation 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
            lro::Operation <Operation, Operation> retrievedResponse = await vpnTunnelsClient.PollOnceDeleteAsync(operationName);

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