public void setInstanceArn(String instanceArn) {
        this.instanceArn = instanceArn;
    }
<p>
The ARN of the IAM Identity Center instance under which the operation will be executed.
</p>

@param instanceArn
       The ARN of the IAM Identity Center instance under which the operation will be executed.
aws-java-sdk-ssoadmin/src/main/java/com/amazonaws/services/ssoadmin/model/PutPermissionsBoundaryToPermissionSetRequest.java