syntax_data: {"ast_node_type":"other","tokens":[{"end":47,"kind":"keyword","start":0,"text":"tys.retain(|oty|"}]}
source_snippet:     tys.retain(|oty| deduplicate.insert(*oty));
context_before:     let mut deduplicate = FxHashSet::default();
context_after:     tys.into_iter().collect()