docs: def write(self, symbol, data):
          """
          Split the tick data to the underlying collections and write the data to each low
          level library.
  
          Args:
              symbol (str): the symbol for the timeseries data
              data (list of dicts or pandas dataframe): Tick data to write
                  if a list of dicts is given the list must be in time order and the time must be stored in
                  an element named 'index' the value of which must be a timezone aware datetime.
                  For a pandas dataframe the index must be a datetime
          """
  
          # get the full set of date ranges that we have
          cursor = self._collection.find()
          for res in cursor:
              library = self._arctic_lib.arctic[res['library_name']]
              dslice = self._slice(data, to_dt(res['start'], mktz('UTC')), to_dt(res['end'], mktz('UTC')))
              if len(dslice) != 0:
                  library.write(symbol, dslice)