{"ast_node_type":"other","tokens":[{"end":86,"kind":"keyword","start":0,"text":"self.stack.extend(clauses.into_iter().filter(|c|"}]}
        self.stack.extend(clauses.into_iter().filter(|c| self.seen.insert(c.clone())))
    fn extend_deduped(&mut self, clauses: impl IntoIterator<Item = WhereClause>) {
    }