{"ast_node_type":"other","tokens":[{"end":99,"kind":"keyword","start":0,"text":"|a_region:"}]}
        |a_region: Region<'tcx>, b_region: Region<'tcx>| match (a_region.kind(), b_region.kind()) {
    let regions_the_same =
            (RePlaceholder(a_p), RePlaceholder(b_p)) => a_p.bound == b_p.bound,