AUv3 iOS Files iCloud

Is it possible to load and save data to iCloud or other places outside pluginfolder/safegroup from within an AUv3?

If so is there any example of this?

I know there are forums for similar topics, but non of those methods actually worked for me to save and load presets to iCloud. But it would be really nice if presets could be shared between the Mac/Windows plugin and the iOS AUv3.