public Builder nodeId(final String nodeId) {
      this.nodeId = Bytes.fromHexString(nodeId);
      return this;
    }
Get IP of the EnodeURL

<p>If "dns" and "dns-update" are enabled -&gt; DNS lookup every time to have the IP up to date
and not to rely on an invalid cache

<p>If the "dns" is enabled but "dns-update" is disabled -&gt; IP is retrieved only one time and
the hostname is no longer stored (maybeHostname is empty).

@return ip
ethereum/p2p/src/main/java/org/hyperledger/besu/ethereum/p2p/peers/EnodeURLImpl.java