private ControllerRegistrationResponse createControllerRegistrationResponse() {
        ControllerRegistrationResponseData data = new ControllerRegistrationResponseData().
                setErrorCode(Errors.NONE.code()).
                setThrottleTimeMs(1000);
        return new ControllerRegistrationResponse(data);
    }
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