Holly Borla 0bd898eb12 [Macros] Allow extension macros to suppress conformances that are already ...

stated in the original source.

If an extension macro can introduce protocol conformances, macro expansion
will check which of those protocols already have a stated conformance in the
original source. The protocols that don't will be passed as arguments to
extension macro expansion, indicating to the macro that it should only add
conformances to those protocols.

2023-06-30 16:01:15 -07:00

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