text: const COMMAND_SUBSCRIBE     = 30;
  const COMMAND_UNSUBSCRIBE   = 31;
  const COMMAND_GETDIRECTORY  = 32;
  const COMMAND_INVOKE        = 33;
  
  const COMMAND_STRINGS = {
      [COMMAND_SUBSCRIBE]: "subscribe",
      [COMMAND_UNSUBSCRIBE]: "unsubscribe",
      [COMMAND_GETDIRECTORY]: "getdirectory",
      [COMMAND_INVOKE]: "invoke"
  };
  
  module.exports = {
      COMMAND_SUBSCRIBE,
      COMMAND_UNSUBSCRIBE,
      COMMAND_GETDIRECTORY,
      COMMAND_INVOKE,
      Subscribe:      COMMAND_SUBSCRIBE,
      Unsubscribe:    COMMAND_UNSUBSCRIBE,
      GetDirectory:   COMMAND_GETDIRECTORY,
      Invoke:         COMMAND_INVOKE,
      COMMAND_STRINGS
  };