Specify the new size of the instance group.

C# |
[ObsoleteAttribute("The With methods are obsolete and will be removed in version 2 of the AWS SDK for .NET. See http://aws.amazon.com/sdkfornet/#version2 for more information.")] public ModifyInstanceGroup WithInstanceCount( int instanceCount )

- instanceCount (Int32)
- Target size of the instance group.

A reference to this updated object so that method calls can be chained
together.