Use _node_to_string with alias and references

asyncua/common/xmlexporter.py

@@ -346,7 +346,7 @@ class XmlExporter:
         for nodeid in ordered_keys:
             name = self.aliases[nodeid]
             ref_el = Et.SubElement(aliases_el, 'Alias', Alias=name)
-            ref_el.text = nodeid.to_string()
+            ref_el.text = self._node_to_string(nodeid)
         # insert behind the namespace element
         self.etree.getroot().insert(1, aliases_el)
 
@@ -357,7 +357,7 @@ class XmlExporter:
             if ref.ReferenceTypeId.Identifier in o_ids.ObjectIdNames:
                 ref_name = o_ids.ObjectIdNames[ref.ReferenceTypeId.Identifier]
             else:
-                ref_name = ref.ReferenceTypeId.to_string()
+                ref_name = self._node_to_string(ref.ReferenceTypeId)
             ref_el = Et.SubElement(refs_el, 'Reference')
             ref_el.attrib['ReferenceType'] = ref_name
             if not ref.IsForward: