docs: function RAgent(session, agentInfo) {
    events.EventEmitter.call(this)
  
    this.info         = utils.roCopy(agentInfo)
    this._session     = session
    this._requestCBs  = new SMap()
    this._subscrCBs   = new SMap()
    this._nextReqID   = utils.sequencer()
  }