Custom Camera Controller

Hello

I want to create a Custom camera controller file suitable for DeepAR swift sdk 5.6.11.
I tried searching and found the following document https://developer.deepar.ai/demo-projects/a888f7f5-c1ac-48fe-b411-c860d399012e
However, the Custom camera controller here is too old and cannot be used.
I hope for your help, Does anyone have an update on this?

Thank you so much!