Yes, I can use the JSONGenerator to build a file to spec from scratch, but I'd like to avoid that.

I'd rather use an existing JSON file as a template, as a foundation, a starting point.

There are a number of Key/Value pairs whose Key name is not unique.
e.g."Person" exists for both sender and for recipient branches.
They're only unique by virtue of their path in the file.

How may I use Packager or Generator or both in concert?

...to develop a SetItemByPath() emulation as it were.

I have plenty of experience using GetItemByPath() with the parser, but how can I then write the value to this item?

Thank you.