DEFINE_METASIG_T(SM(RefCleanupWorkList_RetVoid, r(C(CLEANUP_WORK_LIST)), v))
DEFINE_METASIG_T(SM(RefCleanupWorkList_SafeHandle_RetIntPtr, r(C(CLEANUP_WORK_LIST)) C(SAFE_HANDLE), I))
+#ifdef FEATURE_ICASTABLE
DEFINE_METASIG_T(SM(ICastable_RtType_RefException_RetBool, C(ICASTABLE) C(CLASS) r(C(EXCEPTION)), F))
DEFINE_METASIG_T(SM(ICastable_RtType_RetRtType, C(ICASTABLE) C(CLASS), C(CLASS)))
+#endif // FEATURE_ICASTABLE
DEFINE_METASIG_T(IM(ArrByte_Int_Int_AsyncCallback_Object_RetIAsyncResult, a(b) i i C(ASYNCCALLBACK) j, C(IASYNCRESULT)))
DEFINE_METASIG_T(IM(IAsyncResult_RetInt, C(IASYNCRESULT), i))