Method protocol_members_cant_be_final

mypy/messages.py:1662–1663

(self, ctx: Context)

        self.fail(f'Cannot assign to final {kind} "{unmangle(name)}"', ctx)

    def protocol_members_cant_be_final(self, ctx: Context) -> None:
        self.fail("Protocol member cannot be final", ctx)

    def final_without_value(self, ctx: Context) -> None:
        self.fail("Final name must be initialized with a value", ctx)