h = getFactHandle( h, workingMemory );
workingMemory.retract( h );
workingMemory = getSerialisedStatefulSession( workingMemory );
assertEquals( 0,
IteratorToList.convert( workingMemory.iterateObjects() ).size() );
TruthMaintenanceSystem tms = ((InternalWorkingMemory) workingMemory).getTruthMaintenanceSystem();
final java.lang.reflect.Field field = tms.getClass().getDeclaredField( "assertMap" );
field.setAccessible( true );