code: public void setProxyChainName(String proxyChainName) {
  	    if (proxyChainName == null) {
  	        return;
  	    }
  		this.proxyChainName = proxyChainName.trim();
  		if (proxyChainName.isEmpty()) {
  			setUseProxyChain(false);
  		}
  		getConfig().setProperty(PROXY_CHAIN_NAME, this.proxyChainName);
  	}
docs: Sets the name of the outgoing proxy. If empty the use of the outgoing proxy will be disabled.
  <p>
  <strong>Note:</strong> The call to this method has no effect if the given {@code proxyChainName} is {@code null}.
  
  @param proxyChainName the name of the outgoing proxy
  @see #getProxyChainName()
  @see #setUseProxyChain(boolean)