Trying to unpack the wrong distinct values from a sum type

BadUnpack.m

static void badPrintExample(Example * _Nonnull example) {
    [example switchFoo:^(ExampleBar * _Nonnull bar_) {
//                     ^
// error: incompatible block pointer types sending 'void (^)(ExampleBar * _Nonnull __strong)' to parameter of type 'void (^ _Nonnull)(ExampleFoo * _Nonnull __strong)'
        NSLog(@"Bar: %@, %@", @(bar_.b), @(bar_.c));
    }
                   bar:^(ExampleFoo * _Nonnull foo_) {
//                     ^
// error: incompatible block pointer types sending 'void (^)(ExampleFoo * _Nonnull __strong)' to parameter of type 'void (^ _Nonnull)(ExampleBar * _Nonnull __strong)'
                       NSLog(@"Foo: %@, %@", foo_.f, foo_.g);
                   }];
}