{"ast_node_type":"other","tokens":[{"end":51,"kind":"keyword","start":0,"text":"///"}]}
    /// which we otherwise deny in other positions.
    /// Lower a type, possibly specially handling the type if it's a return type notation
    pub fn lower_ty_maybe_return_type_notation(&self, hir_ty: &hir::Ty<'tcx>) -> Ty<'tcx> {