Using LoadFromFile utility to load "Option Groups", "Options" and "Choices" in Windchill PDMLink

[ptc-4986584]

I am using Windchill PDMLink Release 13.0 and Datecode with CPS 13.0.2.0
We want to use the LoadFromFile utility to load "Option Groups", "Options" and "Choices" in Windchill PDMLink but need the supporting documentation as guidance (for us, it is not found in the location mentioned in the KB Article)

From the KB Article: The Power System Demo Data has examples of XML load files for Option Groups, Options and Choices in the following directory \Windchill\loadFiles\ato\demodata\power_system
Additional information about possible object loading can be found in the csvmapfile.txt located in the following directory \Windchill\loadFiles\
See the section in the file under #--- ATO: loader --- . This section will list the csv elements for all objects that can be loaded

[Fadel]

The file with options load should exist in below location : 

anyways attached a copy 

[ptc-4986584]

@Fadel - we are attempting to call the internal Windchill OOTB Loader methods from a custom rest API we are adding to our custom codebase. Our intent is to create new "Option Groups", "Options" and "Choices" beneath a Product Context (in other words, load new data beneath the Option Pool Tree). 

Our impediment is that we do not resolve the wt.load.defaultContainerPathKey (inside the LoadServerHelper).

Question: is it practical to use the Windchill OOTB Loader methods to add to the tree-data (master data) of a Product Context Option Pool?

Thanks.