ziglings/patches/patches/49_quiz6.patch

28a29,31
>     pub fn getTrunk(self: *Elephant) *Elephant {
>         return self.trunk.?;
>     }
30,31c33,35
<     ???
< 
---
>     pub fn hasTrunk(self: *Elephant) bool {
>         return (self.trunk != null);
>     }