public Optional<Wei> getMaxFeePerBlobGas() {
    return transactionWithMetadata.getTransaction().getMaxFeePerBlobGas();
  }
Retrieves the maximum fee per blob gas of the transaction.

@return an Optional containing a Wei object representing the maximum fee per blob gas of the
    transaction, or an empty Optional if the transaction does not specify a maximum fee per
    blob gas.
ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/graphql/internal/pojoadapter/TransactionAdapter.java