docs: def find_all(connection=None, page_size=100, page_number=0,
          sort_by=DEFAULT_SORT_BY, sort_order=DEFAULT_SORT_ORDER):
          """
          List all playlists.
          """
          return pybrightcove.connection.ItemResultSet("find_all_playlists",
              Playlist, connection, page_size, page_number, sort_by, sort_order)