code: def register_callback_reassigned(self, func, serialised=True):
          
          self.__client.register_callback_reassigned(partial(self.__callback_payload_only, func), serialised)
docs: Register a callback for resource reassignment.  This will be called when any resource
          is reassigned to or from 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 reassigned
              lid       : <name>                # the local name of the resource
              epId      : <GUID>                # the global Id of the agent the
                                                # resource has been reassigned *to*
              id        : <GUID>                # the global Id of the resource
  
          `Note` resource types are defined [here](../Core/Const.m.html)
  
          `Note` You can check whether this is an assign "in" or "out" by comparing the epId with your current
          agent id, using the `IOT.Client.agent_id` property.  If it's the same it's a reassign to you.
  
          `Example`
  
              #!python
              def reassigned_callback(args):
                  print(args)
              ...
              client.register_callback_reassigned(reassigned_callback)
  
          This would print out something like the following on assignment of an R_ENTITY to
  
              #!python
              OrderedDict([(u'lid', u'moved_thing'),
                           (u'r', 1),
                           (u'epId', u'5a8d603ee757133d66d99875d0584c72'),
                           (u'id', u'4448993b44738411de5fe2a6cf32d957')])