public void processCommand(DmxService service, Command command) {
// process increase/decrease
if (command instanceof IncreaseDecreaseType
&& !isRedefinedByCustomCommand(command)) {
IncreaseDecreaseType t = (IncreaseDecreaseType) command;
if (IncreaseDecreaseType.INCREASE.equals(t)) {
for (int channelId : channels) {
service.enableChannel(channelId);
service.increaseChannel(channelId, DIMMER_STEP_SIZE);