def reserve( queue_name, opts = {} )
      opts = opts.merge( :open => true )
      get( queue_name, opts )
    end
def reserve( queue_name, opts = {} )
      opts = opts.merge( :open => true )
      get( queue_name, opts )
    end
Public: Reserve the next item on the queue

 This is a helper method to get an item from a queue and open it for
 reliable read.

 queue_name - the name of the queue to retrieve an item from
 options    - Additional options
              :wait_for - wait for this many ms for an item on the queue(default: 0)