2024
BusyCoderAcademy - Java 8 Stream API Workshop 2:43:00 of 3:09:22
    https://www.youtube.com/watch?v=5IJG483LIjk
    https://github.com/rgupta00/java8workshop-busycoder-25-02-24
    https://github.com/rgupta00/java8workshop-busycoder-25-02-24/blob/master/notes%20java%208.pdf
    https://www.linkedin.com/posts/rajeevguptajavatrainer_java8-javaprogramming-streamprocessing-activity-7165247752170405891-x-A2
    https://www.youtube.com/@busycoderacademy
    https://www.linkedin.com/in/rajeevguptajavatrainer/
    https://www.linkedin.com/in/rajeevguptajavatrainer/recent-activity/all/
    java dev community
    https://www.linkedin.com/groups/3983267/
    ! SAM - single abstract method (for FI, @FunctionalInterface), but can have default methods, static methods
    ! Lambda is not Anonymous Inner Class (which has a bad perf and creates a lot of extra classes)
2016
Valeev - JPoint - Stream API 0:00 of 55:28
    https://www.youtube.com/watch?v=vxikpWnnnCU
2014
Kuksenko - Java Stream API 1 ru 0:00 of 1:03:37
    https://www.youtube.com/watch?v=i0Jr2l3jrDA
Kuksenko - Java Stream API 1 ru 0:00 of 1:13:17
    https://www.youtube.com/watch?v=O8oN4KSZEXE
????
Paumard - Java 8 Streams and Collectors Patterns
    http://www.slideshare.net/jpaumard/java-8-streams-collectors-patterns-performances-and-parallelization