code: def _map_channel_row_to_dict(self, row):
          
          channel_cleaned = _clean_dict(row)
          channel_dict = dict(
              title=channel_cleaned[CHANNEL_TITLE_KEY],
              description=channel_cleaned[CHANNEL_DESCRIPTION_KEY],
              source_domain=channel_cleaned[CHANNEL_DOMAIN_KEY],
              source_id=channel_cleaned[CHANNEL_SOURCEID_KEY],
              language=channel_cleaned[CHANNEL_LANGUAGE_KEY],
              thumbnail_chan_path=channel_cleaned[CHANNEL_THUMBNAIL_KEY]
          )
          return channel_dict
docs: Convert dictionary keys from raw csv format (see CHANNEL_INFO_HEADER),
          to ricecooker-like keys, e.g., ''Source ID' --> 'source_id'