an Entity references as follows:
Apache Apex is a YARN-native platform that unifies stream and batch processing. It processes big data-in-motion in a way that is scalable, performant, fault-tolerant, stateful, secure, distributed, and easily operable. Apache Apex was named a top-level project by The Apache Software Foundation on April 25, 2016. As of September 2019, it is no longer actively developed.