code: public Proxy setSocksProxy(String socksProxy) {
      verifyProxyTypeCompatibility(ProxyType.MANUAL);
      this.proxyType = ProxyType.MANUAL;
      this.socksProxy = socksProxy;
      return this;
    }
docs: Specifies which proxy to use for SOCKS.
  
  @param socksProxy the proxy host, expected format is <code>hostname.com:1234</code>
  @return reference to self