{"ast_node_type":"other","tokens":[{"end":45,"kind":"keyword","start":0,"text":"self.tcx.def_kind(parent)"}]}
                    self.tcx.def_kind(parent)
                if let hir::def::DefKind::TyAlias | hir::def::DefKind::AssocTy =
                    && let Alias(Opaque, AliasTy { def_id: parent_opaque_def_id, .. }) =