Flutter Plugin uses iframeAPI or lib-jitsi-meet?

Hello,

I’m intending to build a custom mobile app interface using flutter. Came across this third-party plugin page

[https://jitsi.github.io/handbook/docs/community/third-party-software/)

which refers to

https://pub.dev/packages/jitsi_meet/example

I’m not clear whether the plugin uses iFrame API or libjitsi meet api(low level). Jitsi handbook refers to using libjitsimeet api if we want to build a custom GUI. By this i’m interpreting in my use case :

Building a custom user interface in flutter for mobile and web & using the libjitsimeet API library to connect to docker-jitsi-meet.

However, i need to be sure which API the plugin uses. Help apprecaited since this is outside the scope of Jitsi since there is no way to contact the plugin developer.