@Lindon as an aside -- this (lazy) example above is also an example of how not allowing AppData to resolve to the project dir in development is massively inconvenient.
In development I can create as many presets as I like - and they are held in the project dir and I can load and save them. But the only way to delete them is to use the above code - which resolves to the compiled plug-ins App Data structure- where these presets are not yet saved.
Worse I can even (conceptually) get around the "dialog warning about overwriting presets" by deleting a preset (before saving it) and then saving anew with my new meta data, but of course it saves on one spot(project dir) and deletes in another(compiled plugin dir)...
So let me ask for another "Special Location" in:
FileSystem.getFolder(var locationType) can we please add project folder, which would resolve to - {PROJECT_FOLDER} as an option?