  
      def validate_request(self, data, files=None):
          """
          Given the request content return the cleaned, validated content.
          Typically raises a :exc:`response.ErrorResponse` with status code 400 (Bad Request) on failure.
          """
          return data
  
      def filter_response(self, obj):
          """
 
</s> remove         Update/create a stored object, by pickling the request content to a locally stored file.
 </s> add         Update/create a stored object, by pickling the request content to a
        locally stored file. </s> remove         return pickle.load(open(pathname, 'rb'))
 </s> add         return pickle.load(open(filename, 'rb')) </s> remove         pathname = os.path.join(OBJECT_STORE_DIR, key)
        pickle.dump(self.CONTENT, open(pathname, 'wb'))
 </s> add         filename = get_filename(key)
        pickle.dump(self.CONTENT, open(filename, 'wb'))
        Typically raises a :exc:`response.ErrorResponse` with status code 400
        (Bad Request) on failure.
  
      def validate_request(self, data, files=None):
          """
          Given the request content return the cleaned, validated content.
        Typically raises a :exc:`response.ErrorResponse` with status code 400
        (Bad Request) on failure.
          """
          return data
  
      def filter_response(self, obj):
          """
keep keep keep keep replace keep keep keep keep keep
 reverse takes request as a kwarg for compatibility with django's reverse 
djangorestframework/resources.py