/// <summary>Snippet for DeleteVersionAsync</summary>
        public async Task DeleteVersionRequestObjectAsync()
        {
            // Snippet: DeleteVersionAsync(DeleteVersionRequest, CallSettings)
            // Additional: DeleteVersionAsync(DeleteVersionRequest, CancellationToken)
            // Create client
            VersionsClient versionsClient = await VersionsClient.CreateAsync();

            // Initialize request argument(s)
            DeleteVersionRequest request = new DeleteVersionRequest {
                Name = "",
            };
            // Make the request
            Operation <Empty, OperationMetadataV1> response = await versionsClient.DeleteVersionAsync(request);

            // Poll until the returned long-running operation is complete
            Operation <Empty, OperationMetadataV1> completedResponse = await response.PollUntilCompletedAsync();

            // Retrieve the operation result
            Empty 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 <Empty, OperationMetadataV1> retrievedResponse = await versionsClient.PollOnceDeleteVersionAsync(operationName);

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