object_property doesn't get the special redefinition treatment from mypy

[glyph]

Is your feature request related to a problem? Please describe.
I get errors like Name "colorValue" already defined on line 160 [no-redef] when using the recommended style like so:

class MyObject(NSObject):
    colorValue = object_property()
    @colorValue.getter
    def colorValue(self) -> NSColor:
        ...

Describe the solution you'd like
Ideally object_property could pretend to return a property at type time, to inherit the special-cased behavior from mypy? There's an entrypoint to a whole constellation of different attempts at describing this problem here.

Describe alternatives you've considered
I could type:ignore these away, which is tedious, or I could name each of the getters/setters some private name, but that's ugly. Mostly I just want to do what the documentation tells me to so that this is future-proof and supported, so while I'd prefer it if Mypy fixed it so that pyobjc could hook in to a documented exception to no-redef in the type system, I'd also be fine with a documentation tweak.

[ronaldoussoren]

PyObjC does not have mypy support at this time, although this is on my todo-list.