code: def register_callback_deleted(self, func, serialised=True):
          
          self.__client.register_callback_deleted(partial(self.__callback_payload_only, func), serialised=serialised)
docs: Register a callback for resource deletion.  This will be called when any resource
          is deleted within your agent.
          If `serialised` is not set, the callbacks might arrive in a different order to they were requested.
  
          The payload passed to your callback is an OrderedDict with the following keys
  
              #!python
              r         : R_ENTITY, R_FEED, etc # the type of resource deleted
              lid       : <name>                # the local name of the resource
              id        : <GUID>                # the global Id of the resource
  
          `Note` resource types are defined [here](../Core/Const.m.html)
  
          `Example`
  
              #!python
              def deleted_callback(args):
                  print(args)
              ...
              client.register_callback_deleted(deleted_callback)
  
          This would print out something like the following on deletion of an R_ENTITY
  
              #!python
              OrderedDict([(u'lid', u'old_thing1'),
                           (u'r', 1),
                           (u'id', u'315637813d801ec6f057c67728bf00c2')])