- tick source with timeout
- :all for calling components on all streams in flow
- source and sink parameterization (opts)
- https://drops.dagstuhl.de/storage/00lipics/lipics-vol127-icdt2019/LIPIcs.ICDT.2019.5/LIPIcs.ICDT.2019.5.pdf
- https://getindata.com/blog/lesson-learned-apache-flink-complex-event-processing/
- https://www.researchgate.net/publication/343994577_Complex_Event_Processing_for_the_Internet_of_Things
- https://www.dfki.de/fileadmin/user_upload/import/11130_PhD_Workshop.pdf
- https://arxiv.org/pdf/1910.07867