@Override
  public Optional<Wei> getBaseFeePerGas() {
    return Optional.ofNullable(configOverrides.get("baseFeePerGas")).map(Wei::fromHexString);
  }
Instantiates a new Json genesis config options.

@param maybeConfig the optional config
@param configOverrides the config overrides map
@param transitionsConfig the transitions configuration
config/src/main/java/org/hyperledger/besu/config/JsonGenesisConfigOptions.java