Bluetooth Low Energy (BLE) API for Unity

Like the previous controller battery issue, I believe this is a major, fatal problem with the Magic Leap Developer Portal documentation. There is far too little information.
https://forum.magicleap.cloud/t/how-to-check-the-remaining-battery-level-of-your-controller

I'm already confused about the support for Wacom tablets.

For the moment, this is a BLE post, so I'd like to see a clarification of the questioner's clarification.

I would also like to have a list of features supported by Magic Leap 2 that work with Unity's Android API at a glance. If possible, I think we should even present sample code.

There are many APIs that were closed in Magic Leap 1 because they provided functionality but did not provide any examples of use.

I would have liked to see this resolved while this site was open to only a few early access developers, i.e., before it was opened to the general public.

Thanks.
Sadao Tokuyama