{"ast_node_type":"variable","tokens":[{"end":59,"kind":"keyword","start":0,"text":"if"}]}
        if let TyKind::Closure(id, _) = ty.kind(Interner) {
    fn is_ty_copy(&mut self, ty: Ty) -> bool {
            // FIXME: We handle closure as a special case, since chalk consider every closure as copy. We