'Return the next departure time.'

@property
def state(self):

    if (not self._departureboard):
        _LOGGER.warning('No    departures    from    %s    heading    %s', self._departure['name'], (self._heading['name'] if self._heading else 'ANY'))
        return
    if ('rtTime' in self._departureboard[0]):
        return self._departureboard[0]['rtTime']
    return self._departureboard[0]['time']
