fix alredy exists mapping erro when both types has the same name (different modules/packages) on map() method

Author: Renan Chagas

mapper/object_mapper.py

@@ -128,8 +128,8 @@ def map(self, from_obj, to_type, ignore_case=False, allow_none=False, excluded=N
             from_obj.__dict__
 
         inst = to_type()
-        key_from = from_obj.__class__.__name__
-        key_to = to_type.__name__
+        key_from = from_obj.__class__
+        key_to = to_type
 
         def not_private(s):
             return not s.startswith('_')