pub type BerClass = Class;
enum BerClass { Universal = 0, Application = 1, ContextSpecific = 2, Private = 3, }
Universal class of tags (0b00)
Universal
0b00
Application class of tags (0b01)
Application
0b01
Context-Specific class of tags (0b10)
Context-Specific
0b10
Private class of tags (0b11)
Private
0b11