{"ast_node_type":"other","tokens":[{"end":55,"kind":"keyword","start":0,"text":"hir::TraitFn::Required(_)"}]}
                    hir::TraitFn::Required(_) => false,
                } => match tcx.hir_node_by_def_id(parent).expect_trait_item().expect_fn().1 {
                    hir::TraitFn::Provided(..) => true,