ENH: it is now possible to deserialize records using the high level api...

ENH: it is now possible to deserialize records using the high level api without giving parents or metadata

src/caosdb/high_level_api.py

@@ -629,6 +629,7 @@ class CaosDBPythonEntity(object):
         else:
             entity = CaosDBPythonRecord()
 
+        if "parents" in serialization:
             for parent in serialization["parents"]:
                 if "unresolved" in parent:
                     id = None
@@ -640,7 +641,8 @@ class CaosDBPythonEntity(object):
                     entity.add_parent(CaosDBPythonUnresolvedParent(
                         id=id, name=name))
                 else:
-                raise NotImplementedError()
+                    raise NotImplementedError(
+                        "Currently, only unresolved parents can be deserialized.")
 
         for baseprop in ("name", "id", "description", "version"):
             if baseprop in serialization:
@@ -673,7 +675,8 @@ class CaosDBPythonEntity(object):
                     if f.name in metadata:
                         propmeta.__setattr__(f.name, metadata[f.name])
             else:
-                raise NotImplementedError()
+                pass
+                # raise NotImplementedError()
 
         return entity