private static TransitionsConfigOptions loadTransitionsFrom(final ObjectNode parentNode) {
    final Optional<ObjectNode> transitionsNode =
        JsonUtil.getObjectNode(parentNode, TRANSITIONS_CONFIG_KEY);
    if (transitionsNode.isEmpty()) {
      return new TransitionsConfigOptions(JsonUtil.createEmptyObjectNode());
    }

    return new TransitionsConfigOptions(transitionsNode.get());
  }
From json object with overrides json genesis config options.

@param configRoot the config root
@param configOverrides the config overrides
@return the json genesis config options
config/src/main/java/org/hyperledger/besu/config/JsonGenesisConfigOptions.java