private AddOffsetsToTxnResponse createAddOffsetsToTxnResponse() {
        return new AddOffsetsToTxnResponse(new AddOffsetsToTxnResponseData()
                                               .setErrorCode(Errors.NONE.code())
                                               .setThrottleTimeMs(0));
    }
Check that all error codes in the response get included in {@link AbstractResponse#errorCounts()}.
clients/src/test/java/org/apache/kafka/common/requests/RequestResponseTest.java