public long getBlobGasPerBlob() {
    return blobGasPerBlob;
  }
Using Cancun mainnet default of 6 blobs for maxBlobsPerBlock: getBlobGasPerBlob() * 6 blobs =
131072 * 6 = 786432 = 0xC0000
ethereum/core/src/main/java/org/hyperledger/besu/ethereum/mainnet/CancunTargetingGasLimitCalculator.java