code: def get_departures(self, station):
          
          url = 'http://webservices.ns.nl/ns-api-avt?station=' + station
  
          raw_departures = self._request('GET', url)
          return self.parse_departures(raw_departures)
docs: Fetch the current departure times from this station
          http://webservices.ns.nl/ns-api-avt?station=${Naam of afkorting Station}
          @param station: station to lookup