void advance() {
            while (!stack.isEmpty()) {
              NodeWalker<E> thisStep = stack.peek();
              var nextStep = thisStep.nextNodeWalker();
              if (nextStep == null) {
                stack.pop();
                if (thisStep.thisNode() != null) {
                  next = thisStep.thisNode();
                  return;
                }
              } else {
                stack.push(nextStep);
              }
            }
            next = null;
          }
Create a BytesTrieSet with a fixed length

@param byteLength length in bytes of the stored types
evm/src/main/java/org/hyperledger/besu/collections/trie/BytesTrieSet.java