'Get a list of the currently available playlists.
Returns a list of :class:`~mopidy.models.Ref` objects referring to the
playlists. In other words, no information about the playlists\' content
is given.
:rtype: list of :class:`mopidy.models.Ref`
.. versionadded:: 1.0'

def as_list(self):

    raise NotImplementedError
