# File lib/aws/s3/object_collection.rb, line 308
      def next_markers page
        if page[:next_marker]
          marker = page[:next_marker]
        elsif page[:contents].size > 0
          marker = page[:contents].last[:key]
        else
          raise 'Unable to find marker in S3 list objects response'
        end

        { :marker => marker }
      end