code: private void handleApplicationCommandRequest(SerialMessage incomingMessage) {
  		logger.trace("Handle Message Application Command Request");
  		int nodeId = incomingMessage.getMessagePayloadByte(1);
  		logger.debug("Application Command Request from Node " + nodeId);
  		ZWaveNode node = getNode(nodeId);
  		
  		if (node == null) {
  			logger.warn("Node {} not initialized yet, ignoring message.", nodeId);
  			return;
  		}
  		
  		node.resetResendCount();
  		
  		int commandClassCode = incomingMessage.getMessagePayloadByte(3);
  		ZWaveCommandClass.CommandClass commandClass = ZWaveCommandClass.CommandClass.getCommandClass(commandClassCode);
  
  		if (commandClass == null) {
  			logger.error(String.format("Unsupported command class 0x%02x", commandClassCode));
  			return;
  		}
  		
  		logger.debug(String.format("Incoming command class %s (0x%02x)", commandClass.getLabel(), commandClass.getKey()));
  		ZWaveCommandClass zwaveCommandClass =  node.getCommandClass(commandClass);
  		
  		// We got an unsupported command class, return.
  		if (zwaveCommandClass == null) {
  			logger.error(String.format("Unsupported command class %s (0x%02x)", commandClass.getLabel(), commandClassCode));
  			return;
  		}
  		
  		logger.trace("Found Command Class {}, passing to handleApplicationCommandRequest", zwaveCommandClass.getCommandClass().getLabel());
  		zwaveCommandClass.handleApplicationCommandRequest(incomingMessage, 4, 1);
  
  		if (incomingMessage.getMessageClass() == this.lastSentMessage.getExpectedReply() && nodeId == this.lastSentMessage.getMessageNode() && !incomingMessage.isTransActionCanceled()) {
  				notifyEventListeners(new ZWaveEvent(ZWaveEventType.TRANSACTION_COMPLETED_EVENT, this.lastSentMessage.getMessageNode(), 1, this.lastSentMessage));
  				transactionCompleted.release();
  				logger.trace("Released. Transaction completed permit count -> {}", transactionCompleted.availablePermits());
  		}
  	}
docs: Handles incoming Application Command Request.
  @param incomingMessage the request message to process.