// europe=[ 1 ], america=[ 2, 3 ]
p2.setStatus( "america" );
workingMemory.update( c2FactHandle,
p2 );
workingMemory.fireAllRules();
cheeseList = IteratorToList.convert( workingMemory.iterateObjects( new ClassObjectFilter( Cheese.class ) ) );
assertEquals( 1,
cheeseList.size() );
// europe=[ ], america=[ 1, 2, 3 ]
p1.setStatus( "america" );