public StubGenesisConfigOptions ecCurve(final Optional<String> ecCurve) {
    this.ecCurve = ecCurve;
    return this;
  }
Ec curve stub genesis config options.

@param ecCurve the ec curve
@return the stub genesis config options
config/src/main/java/org/hyperledger/besu/config/StubGenesisConfigOptions.java