const OldestVersion = "v1"
OldestVersion is the string that represents the oldest server version supported.
const Version = "v1"
Version is the string that represents the current external default version.
Codec is the default codec for serializing input that should use the latest supported version. It supports JSON by default.
Versions is the list of versions that are recognized in code. The order provided may be assumed to be least feature rich to most feature rich, and clients may choose to prefer the latter items in the list over the former items when presented with a set of versions to choose.