stop org.jdesktop.application.Task started using @Action public Task

Hello
I am using org.jdesktop.application.Task from NetBeans 6 in my app.
I start Task with jButton using @[EMAIL PROTECTED]
 public Task startClusteringTask()
{
	...
	return myTask;
}

Is there any way to stop this task when it is running?
Thank you in advance
Mike