update method
Implementation
int update(Pointer<COMObject> pbc) => (ptr.ref.vtable + 12)
.cast<
Pointer<
NativeFunction<
Int32 Function(Pointer, Pointer<COMObject> pbc)>>>()
.value
.asFunction<int Function(Pointer, Pointer<COMObject> pbc)>()(
ptr.ref.lpVtbl, pbc);