startActivityForResult() deprecated for google sign in

I want to make google sign in to my app, but I get this error.

startActivityForResult() deprecated in java

This is my code:

    val signInIntent = googleSignInClient.signInIntent

        startActivityForResult(signInIntent,RC_SIGN_IN)

And I know, I must use registerForActivityResult(); but I don't know how to use it.

from startActivityForResult() deprecated for google sign in