public BesuControllerBuilder synchronizerConfiguration(
      final SynchronizerConfiguration synchronizerConfig) {
    this.syncConfig = synchronizerConfig;
    return this;
  }
Synchronizer configuration besu controller builder.

@param synchronizerConfig the synchronizer config
@return the besu controller builder
app/src/main/java/org/hyperledger/besu/controller/BesuControllerBuilder.java