{"ast_node_type":"other","tokens":[{"end":47,"kind":"keyword","start":0,"text":"assert!(write.index()"}]}
        assert!(write.index() < self.num_rows);
    pub fn union_row_with(&mut self, with: &DenseBitSet<C>, write: R) -> bool {
        assert_eq!(with.domain_size(), self.num_columns);