[Question] Using/adding a local dataset
The download manager supports local directories. You can specify a local directory instead of a url and it should work.
Users may want to either create/modify a local copy of a dataset, or use a custom-built dataset with the same `Dataset` API as externally downloaded datasets.

It appears to be possible to point to a local dataset path rather than downloading the external ones, but I'm not exactly sure how to go about doing this.

A notebook/example script demonstrating this would be very helpful.
[Question] Using/adding a local dataset 
 Users may want to either create/modify a local copy of a dataset, or use a custom-built dataset with the same `Dataset` API as externally downloaded datasets.

It appears to be possible to point to a local dataset path rather than downloading the external ones, but I'm not exactly sure how to go about doing this.

A notebook/example script demonstrating this would be very helpful. 
 The download manager supports local directories. You can specify a local directory instead of a url and it should work.