# File lib/sqs/right_sqs.rb, line 89
    def queue(queue_name, create=true, visibility=nil)
#      url = @interface.queue_url_by_name(queue_name)
#      url = (create ? @interface.create_queue(queue_name, visibility) : nil) unless url
      url = @interface.create_queue(queue_name, visibility) # this returns the url even if it exists
      url ? Queue.new(self, url) : nil
    end