How can I use the setToken() method of Android SDK?

I am developing an Android application and I would like to use the “setToken” method of JitsiMeetConferenceOptions however there is no example or enough explanation for me to go on. I saw a page about the tokens but it was talking about Prosody which I am not using. I am using only Android SDK and I want to know how I can create a JWT Token for Jitsi Meetings and use it.

Thank you.