@Override
    public DescriptorValidator validator() {
        return new InLongMsgValidator();
    }
Tests for the {@link InLongMsgKv} descriptor.
inlong-sort/sort-formats/format-row/format-inlongmsg-kv/src/test/java/org/apache/inlong/sort/formats/inlongmsgkv/InLongMsgKvTest.java