private BesuControllerBuilder propagateConfig(final Consumer<BesuControllerBuilder> toPropagate) {
    toPropagate.accept(preMergeBesuControllerBuilder);
    toPropagate.accept(mergeBesuControllerBuilder);
    return this;
  }
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