# File lib/fog/aws.rb, line 31
    def self.indexed_param(key, values)
      params = {}
      unless key.include?('%d')
        key << '.%d'
      end
      [*values].each_with_index do |value, index|
        if value.respond_to?('keys')
          k = format(key, index + 1)
          value.each do | vkey, vvalue |
            params["#{k}.#{vkey}"] = vvalue
          end
        else
          params[format(key, index + 1)] = value
        end
      end
      params
    end