offset
Offset the resulting set of collections.
This is useful if you aren't interested in the first N collections for one reason or another. For example, you might already have obtained the first 20 collections and so you might want to get the next 20 collections, and that is when you would use offset.
Return
a DittoPendingCollectionsOperation that you can chain further function calls to.
Parameters
offset
the number of collections that you want the eventual resulting set of collections to be offset by (and thus not include).