default Wei blobGasPricePerGas(final BlobGas excessBlobGas) {
    return Wei.ZERO;
  }
Calculates the blob gas price per gas based on the excess blob gas.

@param excessBlobGas the excess blob gas.
@return the blob gas price per gas as a {@link Wei} value.
ethereum/core/src/main/java/org/hyperledger/besu/ethereum/mainnet/feemarket/FeeMarket.java