This silences the compiler without any #import being required in
the .m file AND allows me to document to issue in the header where
it seems to me it belongs. YAY!! Any downsides to this?
In effect, you're declaring an informal protocol. Why not use a real
protocol (perhaps one whose methods are all optional) in its own
header file?
The various classes that implement these methods can #import and adopt
the protocol (so documenting what's going on).
The method that tests the selectors can use an object of type
id<yourProtocol> instead of plain id (so documenting what's going on)
and the compiler will stop complaining without resorting to trickery.
The advantage of this approach is that you don't have to add
explanations to your header files. The protocol is self-documenting,
and describes what's *actually* going on in your design.
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