2025
Otus - Events in BPMN 2 0:00 of 2:05:10
    https://www.youtube.com/watch?v=_KLXCYMRfuE
Otus - How to Read and Build BPMN Diagrams - Visual BP Language 0:00 of 1:35:25
    https://www.youtube.com/watch?v=rdI2hXJ6Aqc