callJoin abstract method
Available since: 2.12.0.
Description: After create an advanced mode call invitation, you can invoke this interface to join the call or switch the primary device.
Use cases: Users who are not in the call join the call, and users who are already in the call switch to the primary device.
When to call: Need to be invoked after logged in.
Implementation
Future<ZIMCallJoinSentResult> callJoin(String callID,ZIMCallJoinConfig config);