code: def addAllowMAC(self, xEUI):
          
          print '%s call addAllowMAC' % self.port
          print xEUI
          if isinstance(xEUI, str):
              macAddr = xEUI
          else:
              macAddr = self.__convertLongToString(xEUI)
  
          try:
              if self._addressfilterMode != 'whitelist':
                  if self.__setAddressfilterMode('Whitelist'):
                      self._addressfilterMode = 'whitelist'
  
              cmd = WPANCTL_CMD + 'insert MAC:Whitelist:Entries %s' % macAddr
              ret = self.__sendCommand(cmd)[0] != 'Fail'
  
              self._addressfilterSet.add(macAddr)
              print 'current whitelist entries:'
              for addr in self._addressfilterSet:
                  print addr
              return ret
  
          except Exception, e:
              ModuleHelper.WriteIntoDebugLogger('addAllowMAC() Error: ' + str(e))
docs: add a given extended address to the whitelist addressfilter
  
          Args:
              xEUI: a given extended address in hex format
  
          Returns:
              True: successful to add a given extended address to the whitelist entry
              False: fail to add a given extended address to the whitelist entry