Macro gdnative::godot_wrap_method

macro_rules! godot_wrap_method {
    (
$ type_name : ty , fn $ method_name : ident (
& mut $ self : ident $ ( , $ pname : ident : $ pty : ty ) * ) -> $ retty : ty
) => { ... };
}

Convenience macro to wrap an object's method into a function pointer that can be passed to the engine when registering a class.