{"ast_node_type":"other","tokens":[{"end":99,"kind":"keyword","start":0,"text":"}"}]}
        } else if expected_sig.sig.skip_binder().inputs_and_output.len() != decl.inputs.len() + 1 {
            return self.sig_of_closure_no_expectation(expr_def_id, decl, closure_kind);
            return self.sig_of_closure_with_mismatched_number_of_arguments(