syntax_data: {"ast_node_type":"other","tokens":[{"end":73,"kind":"keyword","start":0,"text":")"}]}
source_snippet:     ) -> Result<specialization_graph::Ancestors<'tcx>, ErrorGuaranteed> {
context_before:         of_impl: DefId,
context_after:         specialization_graph::ancestors(tcx, self.def_id, of_impl)