# File lib/fog/aws/models/cdn/distribution_helper.rb, line 36
        def enable
          requires :identity
          reload if etag.nil? or caller_reference.nil?
          unless enabled?
            self.enabled = true
            response = put_distribution_config(identity, etag, attributes_to_options)
            etag = response.headers['ETag']
            merge_attributes(response.body)
          end
          true
        end