fun <no name provided>(): Unit
Returns a valid instance of SFMCSdk when it is ready. If initialization of the SDK has already completed then the SFMCSdkReadyListener will be notified immediately. If SFMCSdk.configure has not been called, or is executing, SFMCSdkReadyListener will be called upon completion. Note: If SFMCSdk.configure completes with a status of InitializationStatus.FAILURE for InitializationStatus.status then then SFMCSdkReadyListener will not be called, and the current list of SFMCSdkReadyListener listeners will be cleared.