docs: public void setUserAgent(String name, String version, @Nullable String comments) {
          //TODO Check that height is needed here (it wasnt, but it should be, no?)
          int height = chain == null ? 0 : chain.getBestChainHeight();
          VersionMessage ver = new VersionMessage(params, height);
          ver.relayTxesBeforeFilter = false;
          updateVersionMessageRelayTxesBeforeFilter(ver);
          ver.appendToSubVer(name, version, comments);
          setVersionMessage(ver);
      }