docs: function( message, caller, callback)
      //------------------------------------------------------------------------------------------------------
      {
          var calledBy = '', logMessage;
  
          if ( stringUtil.stringIsEmpty(message) ) { return; }
  
          if ( caller ) {
              calledBy = ' <'+caller+'> ';
          }
  
          logMessage = dateUtil.nowToString() + calledBy + ': ' +  message + '\n';
  
          this.stream.write(logMessage, 'utf8', callback);
      }