'Attempts to find the myepisodes id for the series
Return: myepisode id or None'

def _lookup_myepisodes_id(self, entry):

    myepisodes_id = entry.get(u'myepisodes_id')
    if myepisodes_id:
        return myepisodes_id
    myepisodes_id = self._retrieve_id_from_database(entry)
    if myepisodes_id:
        return myepisodes_id
    myepisodes_id = self._retrieve_id_from_website(entry)
    if myepisodes_id:
        return myepisodes_id
    raise plugin.PluginWarning((u'Unable    to    determine    the    myepisodes    id    for:    `%s`' % entry[u'title']), log)
