private void validate() {
      validateRequiredDependency(nodeKey, "nodeKey");
      validateRequiredDependency(localPeer, "LocalPeer");
      validateRequiredDependency(timerUtil, "TimerUtil");
      validateRequiredDependency(workerExecutor, "AsyncExecutor");
      validateRequiredDependency(metricsSystem, "MetricsSystem");
      validateRequiredDependency(rlpxAgent, "RlpxAgent");
      validateRequiredDependency(peerTable, "PeerTable");
    }
Cancels any timers associated with this entry.
ethereum/p2p/src/main/java/org/hyperledger/besu/ethereum/p2p/discovery/internal/PeerDiscoveryController.java