v14 -> v15

Messaging Callbacks

v14

private MessageCallback messageCallback = new MessageCallback();

v15

private Callback callback = new Callback();
private InboundCallback inboundCallback = new InboundCallback();
private StatusCallback statusCallback = new StatusCallback();

TracksEnum

v14

StartStream startStream = StartStream.builder()
    .tracks(CallDirectionEnum.INBOUND);

v15

StartStream startStream = StartStream.builder()
    .tracks(TracksEnum.inbound);