open fun usage(builder: StringBuilder, cli: CLI): Unit
Computes the usage of the given CLI.
builder - where the usage is going to be written
open fun usage(builder: StringBuilder, prefix: String, cli: CLI): Unit
Computes the usage of the given CLI.
builder - where the usage is going to be written
prefix - a prefix to prepend to the usage line. It will be added between 'Usage: ' and the CLI name.