Overloads the default sortByColumn to record the order for later \
        reference.
        
        :param      column | <int>
                    order  | <QtCore.Qt.SortOrder>

def sortByColumn(self, column, order=QtCore.Qt.AscendingOrder):
        """
        Overloads the default sortByColumn to record the order for later \
        reference.
        
        :param      column | <int>
                    order  | <QtCore.Qt.SortOrder>
        """
        super(XTreeWidget, self).sortByColumn(column, order)
        self._sortOrder = order