Where is the map from keyboard keys to WatchUi.KEY_*

I just started to develop applications for my vivoactive 4, and it took me a long time to understand that menu button for my watch is the same as back button but with extra hold. I got it from %APPDATA%\Garmin\ConnectIQ\Devices\vivoactive4\simulator.json:

    "keys": [
        {
            "id": "enter",
            "location": {
                "height": 59,
                "width": 35,
                "x": 330,
                "y": 154
            }
        },
        {
            "behavior": "onMenu",
            "id": "menu",
            "isHold": true,
            "location": {
                "height": 59,
                "width": 35,
                "x": 330,
                "y": 334
            }
        },
        {
            "behavior": "onBack",
            "id": "esc",
            "location": {
                "height": 59,
                "width": 35,
                "x": 330,
                "y": 334
            }
        }
    ],

However, what I am interested in is whether I can replicate those events without having to press my mouse at certain locations in the simulator, i.e., are there keyboard keys that send the events corresponding to WatchUi.KEY_*? My understanding is that <Enter> maps to KEY_ENTER and <ESC> maps to KEY_ESC, but what about the others? Is there a file in SDK describing that mapping?

Thanks a lot!