# File lib/right_gogrid.rb, line 169
    def list_servers(server_type=nil)
      opts = {}
      opts["server.type"] = server_type if server_type
      request_hash = generate_request("grid/server/list", opts)
      request_cache_or_info(:list_servers, request_hash, GogridJsonParser, !server_type)
    rescue
      on_exception
    end