@Override
  public BesuController build() {
    final BesuController controller = super.build();
    mergeBesuControllerBuilder.getPostMergeContext().setSyncState(controller.getSyncState());
    return controller;
  }
Instantiates a new Transition besu controller builder.

@param preMergeBesuControllerBuilder the pre merge besu controller builder
@param mergeBesuControllerBuilder the merge besu controller builder
app/src/main/java/org/hyperledger/besu/controller/TransitionBesuControllerBuilder.java