GetOxygenLevel?

I see that GetOxygenLevel float was added to Air Vents and Oxygen Tanks. A quick look through the workshop and here and I can't find anyone putting it to use. I am a VERY novice coder and have no idea how to utilize this. I assume you can use this to find the percentage a tank is full and then display on a LCD. Well let me rephrase that can anyone post a code snip on here to show me how to use GetOxygenLevel to display on a LCD? This would go a long way to help me understand how to use...

GetOxygenLevel?