@Override
    public String toString() {
      final StringBuilder builder = new StringBuilder();
      builder.append("AccountState").append("{");
      builder.append("address=").append(getAddress()).append(", ");
      builder.append("nonce=").append(getNonce()).append(", ");
      builder.append("balance=").append(getBalance()).append(", ");
      builder.append("storageRoot=").append(getStorageRoot()).append(", ");
      builder.append("codeHash=").append(getCodeHash()).append(", ");
      return builder.append("}").toString();
    }
Does this account have any storage slots that are set to non-zero values?

@return true if the account has no storage values set to non-zero values. False if any
    storage is set.
ethereum/core/src/main/java/org/hyperledger/besu/ethereum/trie/forest/worldview/ForestMutableWorldState.java