def update_catalog_extent(self, current_extent):
        # type: (int) -> None
        '''
        A method to update the extent associated with this Boot Catalog.

        Parameters:
         current_extent - New extent to associate with this Boot Catalog
        Returns:
         Nothing.
        '''
        if not self._initialized:
            raise pycdlibexception.PyCdlibInternalError('El Torito Boot Catalog not yet initialized')

        self.br.update_boot_system_use(struct.pack('=L', current_extent))
A method to update the extent associated with this Boot Catalog.

        Parameters:
         current_extent - New extent to associate with this Boot Catalog
        Returns:
         Nothing.