{"ast_node_type":"other","tokens":[{"end":5,"kind":"keyword","start":0,"text":"{"}]}
    {
        F: FnMut(&PlaceWithHirId<'tcx>, &hir::Pat<'_>) -> Result<(), Cx::Error>,
        // If (pattern) adjustments are active for this pattern, adjust the `PlaceWithHirId` correspondingly.