of file in the Repository directory.

If `path` is an URL, then `abspath` will return either the location
the file exists locally or the location it would exist when opened
using the `open` method.

Parameters
----------
path : str or pathlib.Path
    Can be a local file or a remote URL. This may, but does not
    have to, include the `baseurl` with which the `Repository` was
    initialized.

Returns
-------
out : str
    Complete path, including the `DataSource` destination directory.

)