Can an AUv3 on iOS access the standalone plugin's sandbox folder when running under another host?

[impromptu]

I’d like my AUv3 on iOS to be able to access sounds that I upload using iTunes to the Standalone plugin’s documents folder. Running the standalone, this works fine using:
File::getSpecialLocation (File::userDocumentsDirectory), which points to:
"/var/mobile/Containers/Data/Application/BIG_NUMBER/Documents"

However under another host this points to somewhere in:
"/var/mobile/Containers/Data/PluginKitPlugin/BIG_NUMBER/Documents"

Is there a way the plugin can access the standalone’s sandbox or is there a betterway to access files?

[impromptu]

Should have look harder. Discussion here:

App Group Folder Access

In NOISE we don’t use the NSFileManager at all to locate shared resources. We simply use JUCE’s File::getSpecialLocation (File::invokedExecutableFile) which will return the path of the AUv3 if you’re code is executing inside the AUv3. You can then, for example, get the Resources directory of the parent app bundle. Something like this (not tested): File getSharedResourceFolder() { File bundle = File::getSpecialLocation (File::invokedExecutableFile).getParentDirectory(); // macOS uses Co…