{"ast_node_type":"other","tokens":[{"end":60,"kind":"keyword","start":0,"text":"//"}]}
                // regions just fine, showing `fn(&MyType)`.
                // `as for<'r> fn(&'r MyType)`. Pretty-printing handles late-bound
                tcx.fn_sig(self.def_id).instantiate_identity().skip_binder().to_string()