{"ast_node_type":"other","tokens":[{"end":80,"kind":"keyword","start":0,"text":"self.try_overloaded_call_traits(call_expr,"}]}
        self.try_overloaded_call_traits(call_expr, adjusted_ty, Some(arg_exprs))
        // is implemented, and use this information for diagnostic.
            .or_else(|| self.try_overloaded_call_traits(call_expr, adjusted_ty, None))