code: def unregisterContextEngineId(self, contextEngineId, pduTypes):
          
  
          # 4.3.4
          if contextEngineId is None:
              # Default to local snmpEngineId
              contextEngineId, = self.mibInstrumController.mibBuilder.importSymbols(
                  '__SNMP-FRAMEWORK-MIB', 'snmpEngineID')
  
          for pduType in pduTypes:
              k = contextEngineId, pduType
              if k in self._appsRegistration:
                  del self._appsRegistration[k]
  
          debug.logger & debug.FLAG_DSP and debug.logger(
              'unregisterContextEngineId: contextEngineId %r pduTypes '
              '%s' % (contextEngineId, pduTypes))
docs: Unregister application with dispatcher