private JsonRpcSuccessResponse requestBlobBaseFee() {
    return (JsonRpcSuccessResponse)
        method.response(
            new JsonRpcRequestContext(new JsonRpcRequest("2.0", "eth_blobBaseFee", null)));
  }
Tests that the method returns zero for forks that do not support blob transactions
ethereum/api/src/test/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/methods/EthBlobBaseFeeTest.java