'Create a new empty playlist with the given name.
Returns a new playlist with the given name and an URI, or :class:`None`
on failure.
*MUST be implemented by subclass.*
:param name: name of the new playlist
:type name: string
:rtype: :class:`mopidy.models.Playlist` or :class:`None`'

def create(self, name):

    raise NotImplementedError
