nymea/libnymea/interfaces/multibutton.json

{
    "description": "A remote control with multiple buttons. Emits pressed(buttonName) on button presses.",
    "extends": "button",
    "events": [
        {
            "name": "pressed",
            "params": [
                {
                    "name": "buttonName",
                    "type": "QString"
                }
            ]
        }
    ]
}