Add pickle support

odxtools/nameditemlist.py

@@ -189,6 +189,12 @@ def __deepcopy__(self, memo: Dict[int, Any]) -> Any:
 
         return result
 
+    def __reduce__(self):
+        reconstruct_function = self.__class__
+        args = (list(self),)
+        state = {"_item_dict": self._item_dict}
+        return reconstruct_function, args, state
+
 
 class NamedItemList(ItemAttributeList[T]):
 

odxtools/tablerow.py

@@ -157,3 +157,10 @@ def structure(self) -> Optional[BasicStructure]:
     def dop(self) -> Optional[DataObjectProperty]:
         """The data object property object resolved by dop_ref."""
         return self._dop
+
+    def __reduce__(self):
+        state = self.__dict__.copy()
+        return (self.__class__, (self.short_name, self.long_name, self.description, self.odx_id,
+                                 self.oid, self.table_ref, self.key_raw, self.structure_ref,
+                                 self.structure_snref, self.dop_ref, self.dop_snref, self.semantic,
+                                 self.sdgs), state)