syntax_data: {"ast_node_type":"other","tokens":[{"end":50,"kind":"keyword","start":0,"text":"self.tcx().opt_rpitit_info(def_id)"}]}
source_snippet:                 self.tcx().opt_rpitit_info(def_id)
context_before:             && let Some(ty::ImplTraitInTraitData::Trait { fn_def_id, .. }) =
context_after:             && let ty::Alias(_, alias_ty) =