endEm(em);
em = currentEntityManager();
startTx(em);
hold = (InterfaceHolder) em.find(InterfaceHolder.class, 1);
hold.setIntf(new InterfaceTestImpl2("intf-2-field"));
assertEquals("intf-2-field", hold.getIntf().getStringField());
endTx(em);
endEm(em);
em = currentEntityManager();