# File lib/fog/aws/models/beanstalk/version.rb, line 62
        def update
          requires :label, :application_name

          options = {
              'ApplicationName' => application_name,
              'Description' => description,
              'VersionLabel' => label
          }
          options.delete_if {|key, value| value.nil?}

          data = connection.update_application_version(options).body['UpdateApplicationVersionResult']['ApplicationVersion']
          merge_attributes(data)
        end