{"ast_node_type":"other","tokens":[{"end":68,"kind":"keyword","start":0,"text":"///"}]}
/// necessary context to give good user-facing errors for this case.
/// The caller can then show an appropriate error; the query does not have the
pub type ConstToValTreeResult<'tcx> = Result<Result<ValTree<'tcx>, Ty<'tcx>>, ErrorHandled>;