docs: void init() {
          ExecutionService executionService = nodeEngine.getExecutionService();
  
          executionService.scheduleWithRepetition(CLUSTER_EXECUTOR_NAME, this::heartbeat,
                  heartbeatIntervalMillis, heartbeatIntervalMillis, TimeUnit.MILLISECONDS);
  
          if (icmpParallelMode) {
              startPeriodicPinger();
          }
      }