code: def main(symbol_yml_file, raw_pickle_file, pickle_dest_path):
      
      metadata = get_metadata()
      symbol_ids = get_symbol_ids(symbol_yml_file, metadata)
      symbol_ids = transform_sids(symbol_ids)
      raw = load_raw(raw_pickle_file)
      filter_and_save(raw, symbol_ids, pickle_dest_path)
docs: Parameters
      ----------
      symbol_yml_file : str
          Path to a YAML file which contains recordings.
      raw_pickle_file : str
          Path to a pickle file which contains raw recordings.
      pickle_dest_path : str
          Path where the filtered dict gets serialized as a pickle file again.