This object stores the data the MergedOptions instances refers to. It stores tuples of (prefix, data, source) where prefix is a Path instance, data is whatever is stored at that prefix, and source is a string as provided when the data is stored.

You shouldn’t need to access the storage directly, but rather access it via the MergedOptions instance.

Having said that, it is a useful debugging technique to access on the MergedOptions instance.