Subscription xsub4 = createExpiredSubscription( 4 );
Subscription xsub5 = createExpiredSubscription( 5 );
table.addSubscription( sub1 );
table.addSubscription( sub2 );
table.addSubscription( sub3 );
table.addSubscription( xsub4 );
table.addSubscription( xsub5 );
assertEquals( "3 subscriptions should have been left", 3,
table.getSubscribers( sub1.getResourceProps( ).getTopicExpression( ) ).length );