254             if oid:

   254             if oid:

   255                 self.register(obj)

   255                 self.register(obj)

   256                 

   256                 

   257     def register(self, obj, registryname=None, oid=None, clear=False):

   257     def register(self, obj, registryname=None, oid=None, clear=False):

   258         """base method to add an object in the registry"""

   258         """base method to add an object in the registry"""

   259         registryname = registryname or obj.__registry__

   260         registryname = registryname or obj.__registry__

   260         oid = oid or obj.id

   261         oid = oid or obj.id

   261         registry = self._registries.setdefault(registryname, {})

   262         registry = self._registries.setdefault(registryname, {})

   262         if clear:

   263         if clear:

   263             vobjects = registry[oid] =  []

   264             vobjects = registry[oid] =  []