nodes: 0, module; 1, function_definition; 2, function_name:headerSortDescending; 3, parameters; 4, block; 5, identifier:self; 6, expression_statement; 7, expression_statement; 8, expression_statement; 9, comment:"""
          Sorts the column at the current header index by descending order.
          """; 10, call; 11, call; 12, attribute; 13, argument_list; 14, attribute; 15, argument_list; 16, identifier:self; 17, identifier:setSortingEnabled; 18, True; 19, identifier:self; 20, identifier:sortByColumn; 21, attribute; 22, attribute; 23, identifier:self; 24, identifier:_headerIndex; 25, attribute; 26, identifier:DescendingOrder; 27, identifier:QtCore; 28, identifier:Qt
code: def headerSortDescending( self ):
          """
          Sorts the column at the current header index by descending order.
          """
          self.setSortingEnabled(True)
          self.sortByColumn(self._headerIndex, QtCore.Qt.DescendingOrder)