public void setStackSetId(String stackSetId) {
        this.stackSetId = stackSetId;
    }
<p>
The name or unique ID of the stack set that the stack instance is associated with.
</p>

@param stackSetId
       The name or unique ID of the stack set that the stack instance is associated with.
aws-java-sdk-cloudformation/src/main/java/com/amazonaws/services/cloudformation/model/StackInstanceSummary.java