Need help for custom API to link Option Set with Option

[AKC]

Version: Windchill 13.0

Use Case: I have created a custom API to create Option, Choices and option set by providing respective inputs. I have observed that, after creation, option has been persisted in Windchill with linked choices. Also newly created option set is associated with specific container. So far it is fine. However I am looking for custom API to link Option Set with Option. Can anyone help me on this ?

Description:

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[Fadel]

There is no supported API to do this https://www.ptc.com/en/support/article/CS451130 , 

you may use xml load see https://support.ptc.com/help/windchill/r13.1.1.0/en/index.html#page/Windchill_Help_Center/WCDataLoadGuide/WCDataLoad_OptionsLoaderDocInputLoadATOAddChoicesOptionSet.html#