Netflix/RxJava — pull request #894 by benjchristensen (2014-02-18 00:41:50+00:00)
Title: Synchronized Operator Check for isTerminated

As per https://github.com/Netflix/RxJava/issues/872 make Synchronized reject events after terminal state.
This class should not unsubscribe though. That is only for SafeSubscriber at the end.