foreign_callback!(callback Foo {
self_type Foo;
f = Foo::f(&self);
});
foreign_callback!(callback Boo {
self_type Boo;
g = Boo::g(&self, x: &C_Foo);
h = Boo::h(&self, x: &mut C_Foo);
});
foreign_class!(
#[derive(PlainClass)]
class Class {
fn static_member(x: *mut C_Boo);
}
);