private TransactionType transactionType() {
    // TODO: when TransactionType.EIP4844 is fully supported, revert this.
    return transactionType(
        TransactionType.FRONTIER, TransactionType.ACCESS_LIST, TransactionType.EIP1559);
  }
Generates a sequence of blocks with some accounts and account storage pre-populated with random
data.
ethereum/core/src/test-support/java/org/hyperledger/besu/ethereum/core/BlockDataGenerator.java