code: def dimensioned_streams(dmap):
      
      dimensioned = []
      for stream in dmap.streams:
          stream_params = stream_parameters([stream])
          if set([str(k) for k in dmap.kdims]) & set(stream_params):
              dimensioned.append(stream)
      return dimensioned
docs: Given a DynamicMap return all streams that have any dimensioned
      parameters i.e parameters also listed in the key dimensions.