code: def summoners(names_or_ids, optional={})
      return {} if names_or_ids.empty?
  
      region = optional[:region] || @sightstone.region
      
      uri = if !names_or_ids[0].is_a? String
        "https://prod.api.pvp.net/api/lol/#{region}/v1.3/summoner/#{names_or_ids.join(',')}"
      else
        "https://prod.api.pvp.net/api/lol/#{region}/v1.3/summoner/by-name/#{URI::encode(names_or_ids.join(','))}"
      end
      
      response = _get_api_response(uri)
      _parse_response(response) { |resp|
        data = JSON.parse(resp)
        summoners = {}
        data.each do |id_or_name, raw_summoner|
          summoners[id_or_name] = Summoner.new(raw_summoner)
        end
  
        if block_given?
          yield summoners
        else
          return summoners
        end
      }
    end
docs: returns an array of summoner objects
   @param names_or_ids [Array<Integer, String>] names or ids of summoners
   @param optional [Hash] optional arguments: :region => replaces default region
   @return [Hash<(String or Integer), Summoner>] A Hash mapping summoner ids or names to summoner objects