docs: public static void collectStats(final StatsCollector collector) {
      collector.record("rpc.received", telnet_rpcs_received, "type=telnet");
      collector.record("rpc.received", http_rpcs_received, "type=http");
      collector.record("rpc.received", http_plugin_rpcs_received, "type=http_plugin");
      collector.record("rpc.exceptions", exceptions_caught);
      HttpQuery.collectStats(collector);
      GraphHandler.collectStats(collector);
      PutDataPointRpc.collectStats(collector);
      QueryRpc.collectStats(collector);
    }