docs: def setItemPolicy(self, item, policy):
          """Sets the policy of the given item"""
          index = item._combobox_indices[self.ColAction].get(policy, 0)
          self._updateItemComboBoxIndex(item, self.ColAction, index)
          combobox = self.itemWidget(item, self.ColAction)
          if combobox:
              combobox.setCurrentIndex(index)