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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 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)