The member variable Cli.commandFactory is never used?
Generally, user call the method Cli.parse(String ...), the CommandFactory instance that installed by Cli.CliBuilder.withCommandFactory(factory) should be used instead of create a new one.
Another optimization point is that you don't have to create a new CommandFactory object every time it's called，CommandFactory instance can be created once on the calling of Cli.CliBuilder.build().
The member variable Cli.commandFactory is never used? Generally, user call the method Cli.parse(String ...), the CommandFactory instance that installed by Cli.CliBuilder.withCommandFactory(factory) should be used instead of create a new one.
Another optimization point is that you don't have to create a new CommandFactory object every time it's called，CommandFactory instance can be created once on the calling of Cli.CliBuilder.build().