{"ast_node_type":"variable","tokens":[{"end":89,"kind":"keyword","start":0,"text":"if"}]}
        if let Some(existing) = self.def_path_hash_to_index.insert(&local_hash, &index) {
        // exceedingly rare.
            let def_path1 = DefPath::make(LOCAL_CRATE, existing, |idx| self.def_key(idx));