public DescribeInstancesResult describeInstances(DescribeInstancesRequest request) {request = beforeClientExecution(request);return executeDescribeInstances(request);}

public virtual DescribeInstancesResponse DescribeInstances(DescribeInstancesRequest request){var options = new InvokeOptions();options.RequestMarshaller = DescribeInstancesRequestMarshaller.Instance;options.ResponseUnmarshaller = DescribeInstancesResponseUnmarshaller.Instance;return Invoke<DescribeInstancesResponse>(request, options);}
