code: def createCleanup(self, varBind, **context):
          
          name, val = varBind
  
          (debug.logger & debug.FLAG_INS and
           debug.logger('%s: createCleanup(%s, %r)' % (self, name, val)))
  
          instances = context['instances'].setdefault(self.name, {self.ST_CREATE: {}, self.ST_DESTROY: {}})
          idx = context['idx']
  
          self.branchVersionId += 1
  
          instances[self.ST_CREATE].pop(-idx - 1, None)
  
          self._vars[name].writeCleanup(varBind, **context)
docs: Finalize Managed Object Instance creation.
  
          Implements the successful third step of the multi-step workflow similar to
          the SNMP SET command processing (:RFC:`1905#section-4.2.5`).
  
          The goal of the third (successful) phase is to seal the new Managed Object
          Instance. Once the system transitions into the *cleanup* state, no roll back
          to the previous Managed Object Instance state is possible.
  
          The role of this object in the MIB tree is non-terminal. It does not
          access the actual Managed Object Instance, but just traverses one level
          down the MIB tree and hands off the query to the underlying objects.
  
          Parameters
          ----------
          varBind: :py:class:`~pysnmp.smi.rfc1902.ObjectType` object representing
              new Managed Object Instance value to create
  
          Other Parameters
          ----------------
          \*\*context:
  
              Query parameters:
  
              * `cbFun` (callable) - user-supplied callable that is invoked to
                pass the new value of the Managed Object Instance or an error.
  
              * `instances` (dict): user-supplied dict for temporarily holding
                Managed Objects Instances being created.
  
          Notes
          -----
          The callback functions (e.g. `cbFun`) have the same signature as this
          method where `varBind` contains the new Managed Object Instance value.
  
          In case of an error, the `error` key in the `context` dict will contain
          an exception object.