<https://github.com/square/retrofit/blob/9dc071dee...

# rx

[jw]

https://github.com/square/retrofit/blob/9dc071dee54a4b2d30ed1a02d2474da0c324694c/retrofit-adapters/rxjava2/src/main/java/retrofit2/adapter/rxjava2/CallExecuteObservable.java#L37-L61