{"ast_node_type":"other","tokens":[{"end":79,"kind":"keyword","start":0,"text":"///"}]}
/// manipulating both, we acquire `anon_node_to_index` or `prev_index_to_index`
/// `anon_node_to_index` and `data`, or `prev_index_to_index` and `data`. When
/// first, and `data` second.