p1.setID("P1");
TargetGroup tg = new TargetGroup("tg");
ProbeGroup pg = new ProbeGroup(tg, "PG");
assertEquals(0, pg.getMembers().size());
pg.addMember(p1);
assertEquals(1, pg.getMembers().size());
p1.setName("Probe 1");
pg.removeMember(p1);
assertEquals(0, pg.getMembers().size());
}