CommonFilterList
BList* CommonFilterList() const;
target = _ApplyFilters(CommonFilterList(), message, target);
CPPUNIT_ASSERT(Looper.CommonFilterList() == NULL);
CPPUNIT_ASSERT(Looper.CommonFilterList()->HasItem(Filter));
CPPUNIT_ASSERT(Looper1.CommonFilterList()->HasItem(Filter));
CPPUNIT_ASSERT(Looper2.CommonFilterList() == NULL);
CPPUNIT_ASSERT(Looper.CommonFilterList() == NULL);
CPPUNIT_ASSERT(Looper.CommonFilterList() == NULL);
CPPUNIT_ASSERT(Looper.CommonFilterList() == filters);
CPPUNIT_ASSERT(Looper1.CommonFilterList() == filters);
CPPUNIT_ASSERT(Looper2.CommonFilterList() == NULL);
CPPUNIT_ASSERT(Looper2.CommonFilterList() == filters);