public StackInstanceSummary withRegion(String region) {
        setRegion(region);
        return this;
    }
<p>
The name of the Amazon Web Services Region that the stack instance is associated with.
</p>

@param region
       The name of the Amazon Web Services Region that the stack instance is associated with.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-cloudformation/src/main/java/com/amazonaws/services/cloudformation/model/StackInstanceSummary.java