code: 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)f 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))
docs: A method to update the extent associated with this Boot Catalog.
  
          Parameters:
           current_extent - New extent to associate with this Boot Catalog
          Returns:
           Nothing.