# File lib/fog/network/openstack/requests/update_security_group.rb, line 5
        def update_security_group(security_group_id, options = {})
          data = {'security_group' => {}}

          [:name, :description].each do |key|
            data['security_group'][key] = options[key] if options[key]
          end

          request(
            :body    => Fog::JSON.encode(data),
            :expects => 200,
            :method  => 'PUT',
            :path    => "security-groups/#{security_group_id}"
          )
        end