public Task<DescribeEnvironmentManagedActionHistoryResponse> DescribeEnvironmentManagedActionHistoryAsync(DescribeEnvironmentManagedActionHistoryRequest request, System.Threading.CancellationToken cancellationToken = default(CancellationToken))
{
var marshaller = new DescribeEnvironmentManagedActionHistoryRequestMarshaller();
var unmarshaller = DescribeEnvironmentManagedActionHistoryResponseUnmarshaller.Instance;
return InvokeAsync<DescribeEnvironmentManagedActionHistoryRequest,DescribeEnvironmentManagedActionHistoryResponse>(request, marshaller,
unmarshaller, cancellationToken);
}