ServerManagement.start("all", 0);
ServerManagement.start(0, "all");
   public void testLeaveAndJoin() throws Exception   {      // By this time, after running setUp(), we should have an already formed cluster of three      // nodes (0, 1, 2).      // TODO - verify this assertion      // We get the first node to programatically leave the cluster      ServerManagement.stop(0);      // TODO - verify that the cluster formed correctly assertion      // We get the first node to re-join      ServerManagement.start("all", 0);   }