{"ast_node_type":"other","tokens":[{"end":92,"kind":"keyword","start":0,"text":"ty::ExistentialTraitRef::erase_self_ty(*self.tcx,"}]}
                        ty::ExistentialTraitRef::erase_self_ty(*self.tcx, upcast_trait_ref);
                    let erased_trait_ref =
                    assert_eq!(