Creates the instance of ConferenceSession.
userId - the id of current user
callType - can be CallType.VIDEO_CALL (by default) or CallType.AUDIO_CALL.
startScreenSharing - set true if want to initialize the call with Screen sharing feature.
desktopCapturerSource - the desktop capturer source, if it is null the
default Window/Screen will be captured. Use only for desktop platforms.
Use ScreenSelectDialog to give the user a choice of the shared Window/Screen.
useIOSBroadcasting - set true if the Broadcast Upload Extension was
added to your iOS project for implementation Screen Sharing feature, otherwise
set false and in-app Screen Sharing will be started. Used for iOS platform only.
See our step-by-step guide
on how to integrate the Screen Broadcasting feature into your iOS app.