if err != nil {
			return np, grid.NewRemoteErr(err)
		}
		subSys := vars.Get(peerRESTSubSys)
		// Apply dynamic values.
		ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
		defer cancel()
		if subSys == "" {
			err = applyDynamicConfig(ctx, objAPI, srvCfg)
		} else {
			err = applyDynamicConfigForSubSys(ctx, objAPI, srvCfg, subSys)
		}
		if err != nil {
			return np, grid.NewRemoteErr(err)

func (sys *NotificationSys) SignalConfigReload(subSys string) []NotificationPeerErr {
	ng := WithNPeers(len(sys.peerClients))
	for idx, client := range sys.peerClients {
		if client == nil {
			continue
		}
		client := client
		ng.Go(GlobalContext, func() error {
			return client.SignalService(serviceReloadDynamic, subSys, false, nil)
		}, idx, *client.host)
	}
	return ng.Wait()
}

			if wg != nil {
				wg.Done()
			}
			// Clean up and de-register the subscriber
			ps.Lock()
			defer ps.Unlock()
			var remainTypes Mask
			for i, s := range ps.subs {
				if s == sub {
					ps.subs = append(ps.subs[:i], ps.subs[i+1:]...)
				} else {
					remainTypes.Merge(s.types)
				}
			}
			atomic.StoreUint64(&ps.types, uint64(remainTypes))
			atomic.AddInt32(&ps.numSubscribers, -1)
		}()

		t.Fatalf("unexpected error: %v", err)
	}
	if err := ps.Subscribe(MaskAll, ch2, doneCh, nil); err != nil {
		t.Fatalf("unexpected error: %v", err)
	}
	ps.Lock()
	defer ps.Unlock()

	if len(ps.subs) != 2 || ps.NumSubscribers(MaskAll) != 2 || ps.Subscribers() != 2 {
		t.Fatalf("expected 2 subscribers")
	}
}

func TestNumSubscribersMask(t *testing.T) {
	ps := New[Maskable, Mask](2)
	ch1 := make(chan Maskable, 1)

    private static rpc.sid_t buildSidT(byte revision, byte[] identAuth, int... subs) {
        rpc.sid_t s = new rpc.sid_t();
        s.revision = revision;
        s.sub_authority_count = (byte) subs.length;
        s.identifier_authority = Arrays.copyOf(identAuth, 6);
        s.sub_authority = Arrays.copyOf(subs, subs.length);
        return s;
    }

    @Nested

            terminal = ft.getTerminal();
        }
        List<String> subs = new ArrayList<>();
        subs.add("type=" + terminal.getType());
        if (terminal instanceof TerminalExt te) {
            subs.add("provider=" + te.getProvider().name());
        }
        if (terminal instanceof AbstractPosixTerminal pt) {
            subs.add("pty=" + pt.getPty().getClass().getName());
        }