code: public ArrayList<Long> serviceName_vrack_network_GET(String serviceName, String subnet, Long vlan) throws IOException {
  		String qPath = "/ipLoadbalancing/{serviceName}/vrack/network";
  		StringBuilder sb = path(qPath, serviceName);
  		query(sb, "subnet", subnet);
  		query(sb, "vlan", vlan);
  		String resp = exec(qPath, "GET", sb.toString(), null);
  		return convertTo(resp, t2);
  	}
docs: Descriptions of private networks in the vRack attached to this Load Balancer
  
  REST: GET /ipLoadbalancing/{serviceName}/vrack/network
  @param vlan [required] Filter the value of vlan property (=)
  @param subnet [required] Filter the value of subnet property (=)
  @param serviceName [required] The internal name of your IP load balancing
  
  API beta