T - the value type pushedpublic interface ObservableOnSubscribe<T>
subscribe() method that receives
 an instance of an ObservableEmitter instance that allows pushing
 events in a cancellation-safe manner.| Modifier and Type | Method and Description | 
|---|---|
| void | subscribe(ObservableEmitter<T> emitter)Called for each Observer that subscribes. | 
void subscribe(@NonNull ObservableEmitter<T> emitter) throws Exception
emitter - the safe emitter instance, never nullException - on error