@Test
    public void shouldInferStructSchema() {
        Struct struct = new Struct(SchemaBuilder.struct().build());
        Schema structSchema = Values.inferSchema(struct);
        assertEquals(struct.schema(), structSchema);
    }
This is technically invalid JSON, and we don't want to simply ignore the blank entry.
connect/api/src/test/java/org/apache/kafka/connect/data/ValuesTest.java