How to send keys via Bluetooth HID

Hi. I’m new to the Bluetooth APIs so I’m am looking for some example on how to establish a connection and send keys from the watch to a Windows PC using the Bluetooth HID profile (for instance, send “A” or “Control+X” to the PC as if the watch was a keyboard connected to it). I assume this would be possible since Samsung’s PPT Controller app seems to do that.

I see there is the BluetoothHid class but I don’t understand how to use it to send the keystrokes.

These are the Classes/API references available till now.

Class BluetoothHid (samsung.github.io)
Class HidConnectionStateChangedEventArgs (samsung.github.io)

You may check out the similar API references from Tizen Native APIs, concepts are pretty much the same. Might need to have some trial and error I guess.
Tizen Native API: Bluetooth HID
Tizen Native API: Bluetooth HID Device
Tizen Native API: Bluetooth HID Host