# File lib/fog/rackspace/models/queues/queue.rb, line 83
        def dequeue(ttl, grace, options = {}, &block)
          claim = claims.create(
            options.merge(
            {
              :limit => 1,
              :ttl => ttl,
              :grace => grace
            }))

          if claim
            message = claim.messages.first
            yield message if block_given?
            message.destroy
            true
          else
            false
          end
        end