1. DomName('Presentation.joinSession')
  2. DocsEditable()
  3. Experimental()
Future joinSession(String url, String presentationId)

Source 

@DomName('Presentation.joinSession')
@DocsEditable()
@Experimental() // untriaged
Future joinSession(String url, String presentationId) => convertNativePromiseToDartFuture(_blink.BlinkPresentation.instance.joinSession_Callback_2_(this, url, presentationId));