@Test
    public void testApiIdsArePositive() {
        for (ApiMessageType type : ApiMessageType.values())
            assertTrue(type.apiKey() >= 0);
    }
Kafka currently supports direct upgrades from 0.8 to the latest version. As such, it has to support all apis
starting from version 0 and we must have schemas from the oldest version to the latest.
clients/src/test/java/org/apache/kafka/common/message/ApiMessageTypeTest.java