Function _round_trip_serialization

tests/test_features.py:511–512

(foo: Foo)

        qux: Empty = betterproto.message_field(3, group="group1")

    def _round_trip_serialization(foo: Foo) -> Foo:
        return Foo().parse(bytes(foo))

    foo1 = Foo(bar=0)
    foo2 = Foo(baz="")