[FIX] l10n_it_fatturapa_in: compatibility with xmlschema 1.5.x

l10n_it_fatturapa_in/wizard/efattura.py

@@ -1,5 +1,6 @@
 import logging
 import re
+from collections.abc import MutableMapping
 from datetime import datetime
 
 import xmlschema
@@ -164,9 +165,9 @@ def _fix_xmlstring(xml_string):
     return xml_string.encode()
 
 
-def CreateFromDocument(xml_string):
+def CreateFromDocument(xml_string):  # noqa: C901
     # il codice seguente rimpiazza fatturapa.CreateFromDocument(xml_string)
-    class ObjectDict(object):
+    class ObjectDict(MutableMapping):
         def __getattr__(self, attr):
             try:
                 return getattr(self.__dict__, attr)
@@ -179,6 +180,15 @@ def __getitem__(self, *attr, **kwattr):
         def __setitem__(self, *attr, **kwattr):
             return self.__dict__.__setitem__(*attr, **kwattr)
 
+        def __delitem__(self, *attr, **kwattr):
+            return self.__dict__.__delitem__(*attr, **kwattr)
+
+        def __iter__(self, *attr, **kwattr):
+            return self.__dict__.__iter__(*attr, **kwattr)
+
+        def __len__(self, *attr, **kwattr):
+            return self.__dict__.__len__(*attr, **kwattr)
+
     # TODO: crearlo una tantum?
     validator = xmlschema.XMLSchema(
         _xml_schema_1_2_1,