{"ast_node_type":"other","tokens":[{"end":98,"kind":"keyword","start":0,"text":")"}]}
    ) -> InterpResult<'tcx, Option<AllocRefMut<'_, 'tcx, M::Provenance, M::AllocExtra, M::Bytes>>>
        mplace: &MPlaceTy<'tcx, M::Provenance>,
    {