syntax_data: {"ast_node_type":"other","tokens":[{"end":47,"kind":"keyword","start":0,"text":"self.visit_opaque_ty(alias_ty);"}]}
source_snippet:                 self.visit_opaque_ty(alias_ty);
context_before:             ty::Alias(ty::Opaque, alias_ty) if alias_ty.def_id.is_local() => {
context_after:             }