code: def has_data_labels(self, value):
          
          if bool(value) is False:
              self._element._remove_dLbls()
          else:
              if self._element.dLbls is None:
                  dLbls = self._element._add_dLbls()
                  dLbls.showVal.val = True
docs: Add, remove, or leave alone the ``<c:dLbls>`` child element depending
          on current state and assigned *value*. If *value* is |True| and no
          ``<c:dLbls>`` element is present, a new default element is added with
          default child elements and settings. When |False|, any existing dLbls
          element is removed.