docs: public static void main(final String[] args) throws IOException {
          ShardingConfiguration shardingConfig = new ShardingConfigurationLoader().load();
          int port = getPort(args);
          if (null == shardingConfig.getServerConfiguration().getOrchestration()) {
              startWithoutRegistryCenter(shardingConfig.getRuleConfigurationMap(), shardingConfig.getServerConfiguration().getAuthentication(), shardingConfig.getServerConfiguration().getProps(), port);
          } else {
              startWithRegistryCenter(shardingConfig.getServerConfiguration(), shardingConfig.getRuleConfigurationMap().keySet(), shardingConfig.getRuleConfigurationMap(), port);
          }
      }