code: def GET_getitemtypes(self) -> None:
          
          for item in state.getitems:
              type_ = self._get_itemtype(item)
              for name, _ in item.yield_name2value():
                  self._outputs[name] = type_
docs: Get the types of all current exchange items supposed to return
          the values of |Parameter| or |Sequence| objects or the time series
          of |IOSequence| objects.