{"ast_node_type":"other","tokens":[{"end":67,"kind":"keyword","start":0,"text":"pat.each_binding_or_first(&mut"}]}
        pat.each_binding_or_first(&mut |_, hir_id, pat_sp, ident| {
        // to be the "authoritative" set of ids.
            let ln = self.live_node(hir_id, pat_sp);