class Redis

def zrevrange(key, start, stop, options = {})

from high to low.
Return a range of members in a sorted set, by index, with scores ordered 
def zrevrange(key, start, stop, options = {})
  command = CommandOptions.new(options) do |c|
    c.bool :withscores
    c.bool :with_scores
  end
  synchronize do
    @client.call(:zrevrange, key, start, stop, *command.to_a)
  end
end