@Test
  public void normalPdxInstanceReturnsTrueFromIsDeserializable() {
    PdxInstanceFactory factory = cache.createPdxInstanceFactory("className");
    factory.writeString("fieldOne", "valueOne");
    factory.writeString("fieldTwo", "valueTwo");
    PdxInstance instance = factory.create();

    assertThat(instance.isDeserializable()).isTrue();
  }
Have a pdx with an array of pdx. Make sure the array class does not get loaded during getField,
hashCode, and equals.
geode-core/src/integrationTest/java/org/apache/geode/pdx/PdxInstanceFactoryJUnitTest.java