syntax_data: {"ast_node_type":"other","tokens":[{"end":76,"kind":"keyword","start":0,"text":".or_insert_with(||"}]}
source_snippet:                 .or_insert_with(|| OpaqueFnEntry { kind, return_ty: None });
context_before:                 .entry((trait_pred.rebind((types, trait_pred.skip_binder().self_ty())), is_async))
context_after:             if kind.extends(entry.kind) {