code: def data_item(self) -> DataItem:
          
          display_panel = self.__display_panel
          if not display_panel:
              return None
          data_item = display_panel.data_item
          return DataItem(data_item) if data_item else None
docs: Return the data item associated with this display panel.
  
          .. versionadded:: 1.0
  
          Scriptable: Yes