171 

   172     def externalid(): #@NoSelf

   173         doc = """simulate externalid""" #@UnusedVariable

   174        

   175         def fget(self):

   176             if self.media_obj is None:

   177                 empty_media = self.__get_empty_media()

   178                 if empty_media:

   179                     return empty_media.externalid

   180                 else: 

   181                     return None

   182             else:

   183                 return self.media_obj.externalid

   184            

   185         def fset(self, value):

   186             if self.media_obj is not None:

   187                 self.media_obj.externalid = value

   188                       

   189         return locals()

   190        

   191     externalid = property(**externalid())

   192