execute.java

	@Override
	public Object execute(ExecutionEvent event) throws ExecutionException
	{
		final Transition transition = getTransition(event.getApplicationContext());
		if (isEnabled(transition))
		{
			EditingDomain domain = AdapterFactoryEditingDomain.getEditingDomainFor(transition);
			if (domain != null)
			{
				domain.getCommandStack().execute(new FireTransitionCommand(domain, transition));
			} else {
				fire(transition);
			}
		}
		return null;
	}