class Chef::Knife::RoleFromFile

def loader
  @loader ||= Knife::Core::ObjectLoader.new(Chef::Role, ui)
end

def run
  @name_args.each do |arg|
    updated = loader.load_from("roles", arg)
    updated.save
    output(format_for_display(updated)) if config[:print_after]
    ui.info("Updated Role #{updated.name}")
  end
end