{"ast_node_type":"other","tokens":[{"end":67,"kind":"keyword","start":0,"text":"self.tcx.impl_trait_ref(impl_def_id).is_none(),"}]}
                    self.tcx.impl_trait_ref(impl_def_id).is_none(),
                assert!(
                    "impl {impl_def_id:?} is not an inherent impl"