java enum naming rules
Constant & all Capital Case
https://stackoverflow.com/questions/3069743/coding-conventions-naming-enums
https://docs.oracle.com/javase/tutorial/java/javaOO/enum.html
https://docs.microsoft.com/en-us/previous-versions/dotnet/netframework-1.1/4x252001(v=vs.71)
https://docs.microsoft.com/en-us/previous-versions/dotnet/netframework-1.1/x2dbyw72(v%3Dvs.71)
Enum & demos
Pascal case, Camel case, Uppercase
