Hello there, we are trying to publish a custom skill which interacts with the installed hardware. User may be able to name the devices like bedroom fan, dining lights etc. If the hardware is not found on the linked hub, the our skill will respond by saying "Bedroom fan not found". How do we allow the people who certify the skill to test the positive responses like "Bedroom fan is turned on", since they won't be having our hardware ? Should we keep a sample setup at our facility and allow testers to link to our facility to test the skill for the sake of certifying?