TCT40 I2C command documentation?

Is there documentation somewhere on the I2C commands implemented by the TCT40 ultrasonic sensor. ie if I want to roll my own library (since I’m not on an Arduino). My next step is digging through the Arduino library to reverse engineer, but if it’s documented somewhere that would certainly be simpler.

pg 33 here
And the SRC files here SparkFun_Qwiic_Ultrasonic_Arduino_Library/src at main · sparkfun/SparkFun_Qwiic_Ultrasonic_Arduino_Library · GitHub