Attaches one or more Amazon EC2 instances to an existing Auto Scaling group. After the instance(s) is attached, it becomes a part of the Auto Scaling group.
For more information, see Attach Amazon EC2 Instance(s) to Your Existing Auto Scaling Group in the Auto Scaling Developer Guide .
 Declaration Syntax
 Declaration Syntax| C# | 
public AttachInstancesResponse AttachInstances( AttachInstancesRequest attachInstancesRequest )
 Parameters
 Parameters- attachInstancesRequest (AttachInstancesRequest)
- Container for the necessary parameters to execute the AttachInstances service method on AmazonAutoScaling.