How to set the Server Translations

Can anyone guide me ways to programmatically set the GlobalLB::Server ServerIPs Translations.

 

 

I could not find any API in the DevCentral Wiki or the SDK.

 

 

 

 

with add_ip() method I am able to create peer and server ips.

 

if we specify unit_id = 1 we are able to set the server ips and unit_id = 2 peer ips , but how do we set the translations.