code: function OutputTee(logfileOutput, terminalOutput) {
  
      this._outputs = [];
      this._outputs[_OUTPUT_TEE_LOGFILE] = logfileOutput;
      this._outputs[_OUTPUT_TEE_TERMINAL] = terminalOutput;
  }
docs: Console output interface.
  @constructor
  @param {OutputIface} logfileOutput
  @extends OutputIface