New method clearCache.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@1125 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Type/Cache.py

@@ -138,3 +138,6 @@ class CachingMethod:
     return obj.result
 
 allow_class(CachingMethod)
+
+def clearCache(self):
+  cached_object_dict.clear()
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