docs: protected void validateLockedMutex(ClusterMutex clusterMutex) {
          if (!clusterMutex.isLocked()) {
              throw new IllegalMonitorStateException(
                      "Mutex is not currently locked, it cannot be updated: " + clusterMutex);
          }
          final String serverName = this.portalInfoProvider.getUniqueServerName();
          if (!serverName.equals(clusterMutex.getServerId())) {
              throw new IllegalMonitorStateException(
                      "Mutex is currently locked by another server: "
                              + clusterMutex
                              + " local serverName: "
                              + serverName);
          }
      }