public Builder setDnsDiscoveryUrl(final String dnsDiscoveryUrl) {
      this.dnsDiscoveryUrl = dnsDiscoveryUrl;
      return this;
    }
Sets dns discovery url.

@param dnsDiscoveryUrl the dns discovery url
@return this builder
app/src/main/java/org/hyperledger/besu/cli/config/EthNetworkConfig.java