public static Schema schemaFromPojoClass(
      TypeDescriptor<?> typeDescriptor, FieldValueTypeSupplier fieldValueTypeSupplier) {
    return StaticSchemaInference.schemaFromClass(typeDescriptor, fieldValueTypeSupplier);
  }
@Test
  public void testNullables() {
    Schema schema =
        POJOUtils.schemaFromPojoClass(
            new TypeDescriptor<POJOWithNullables>() {}, JavaFieldTypeSupplier.INSTANCE);
    assertTrue(schema.getField("str").getType().getNullable());
    assertFalse(schema.getField("anInt").getType().getNullable());
  }