inheritanceTest.setPayload("payload1");
inheritanceTest.save();
InheritanceChildB inheritanceChildB = new InheritanceChildB();
inheritanceChildB.setPayload("payload 2");
inheritanceChildB.save();
InheritanceChildC inheritanceChildC = new InheritanceChildC();
inheritanceChildC.setPayload("payload 3");
inheritanceChildC.save();
InheritanceChildD inheritanceChildD = new InheritanceChildD();
inheritanceChildD.setPayload("payload 4");
inheritanceChildD.save();
// Check that all objects are saved into the InheritanceTest table