code: def data(self, index, role):
          
          item = self.itemAt(index)
          if not item:
              return None
          d = item.declaration
          if role == Qt.DisplayRole:
              return d.text
          elif role == Qt.ToolTipRole:
              return d.tool_tip
          elif role == Qt.CheckStateRole and d.checkable:
              return d.checked and Qt.Checked or Qt.Unchecked
          elif role == Qt.DecorationRole and d.icon:
              return get_cached_qicon(d.icon)
          elif role == Qt.EditRole and d.editable:
              return d.text
          elif role == Qt.StatusTipRole:
              return d.status_tip
          elif role == Qt.TextAlignmentRole:
              h, v = d.text_alignment
              return TEXT_H_ALIGNMENTS[h] | TEXT_V_ALIGNMENTS[v]
          elif role == Qt.ForegroundRole and d.foreground:
              return get_cached_qcolor(d.foreground)
          elif role == Qt.BackgroundRole and d.background:
              return get_cached_qcolor(d.background)
          #elif role == Qt.SizeHintRole and d.minimum_size:
          #    return d.minimum_size
  
          return None
docs: Retrieve the data for the item at the given index