@Test(expected = ValidationException.class)
    public void testDuplicateSchema() {
        // we add an additional schema
        addPropertyAndVerify(
                MINIMAL_DESCRIPTOR_WITH_DERIVED_SCHEMA,
                "format.schema",
                TEST_SCHEMA);
    }
Tests for the {@link Kv} descriptor.
inlong-sort/sort-formats/format-row/format-kv/src/test/java/org/apache/inlong/sort/formats/kv/KvTest.java