code: func (s *StandardChannel) ClassifyMsg(chdr *cb.ChannelHeader) Classification {
  	switch chdr.Type {
  	case int32(cb.HeaderType_CONFIG_UPDATE):
  		return ConfigUpdateMsg
  	case int32(cb.HeaderType_ORDERER_TRANSACTION):
  		// In order to maintain backwards compatibility, we must classify these messages
  		return ConfigMsg
  	case int32(cb.HeaderType_CONFIG):
  		// In order to maintain backwards compatibility, we must classify these messages
  		return ConfigMsg
  	default:
  		return NormalMsg
  	}
  }
docs: // ClassifyMsg inspects the message to determine which type of processing is necessary