{"ast_node_type":"other","tokens":[{"end":61,"kind":"keyword","start":0,"text":"RetType::Expr(ty)"}]}
            RetType::Expr(ty) => FunType::Single(ty.clone()),
            RetType::Expr(ty) if ty.is_unit() => FunType::Unit,
            RetType::Stmt => match self.outliving_locals.as_slice() {