pm.currentTransaction().begin();
Qsdfgh q0 = (Qsdfgh) pm.getObjectById(
pm.newObjectIdInstance(Qsdfgh.class, "q0"), false);
Qsdfgh q1 = (Qsdfgh) pm.getObjectById(
pm.newObjectIdInstance(Qsdfgh.class, "q1"), false);
Azerty a0 = (Azerty) pm.getObjectById(
pm.newObjectIdInstance(Azerty.class, "a0"), false);
a0.qsds.remove(q0);
a0.qsds.remove(q1);
pm.currentTransaction().commit();
pm.close();