code: def reload(self):
          'Loads rows and/or columns.  Override in subclass.'
          self.rows = []
          for r in self.iterload():
              self.addRow(rf reload(self):
          'Loads rows and/or columns.  Override in subclass.'
          self.rows = []
          for r in self.iterload():
              self.addRow(r)
docs: Loads rows and/or columns.  Override in subclass.