class Gem::Commands::YankCommand

def initialize
  super 'yank', description
  add_version_option("remove")
  add_platform_option("remove")
  add_option('--undo') do |value, options|
    options[:undo] = true
  end
  
  add_option('-k', '--key KEY_NAME',
             'Use API key from your gem credentials file') do |value, options|
    options[:key] = value
  end
end