public Task<DescribeCacheEngineVersionsResponse> DescribeCacheEngineVersionsAsync(DescribeCacheEngineVersionsRequest request, System.Threading.CancellationToken cancellationToken = default(CancellationToken))
{
var marshaller = new DescribeCacheEngineVersionsRequestMarshaller();
var unmarshaller = DescribeCacheEngineVersionsResponseUnmarshaller.Instance;
return InvokeAsync<DescribeCacheEngineVersionsRequest,DescribeCacheEngineVersionsResponse>(request, marshaller,
unmarshaller, cancellationToken);
}