How to implement ?

Hi,
I am trying to connect an ESP32 Dev Board with I2c to an ADAFRUIT SX1509 GPIO extension board.
I do not know how to implement this library. Do I have to replace the original Wire.h library? Do I have to merge ?
What calls do I have to use in my code. (original wire.h calls or adapted ??)

Regards
Henk Wijtman
Rotterdam 
Netherlands

