docs: function( fileName)
      //------------------------------------------------------------------------------------------------------
      {
          // if you want onEventName to work, send options to Events
          // otherwise send nothing
          // but you must call it or throws
          var logDir = path.join(path.dirname(require.main), 'logs');
  
          if (!fs.existsSync(logDir)){
              fs.mkdirSync(logDir);
          }
  
          this.fileName = fileName;
  
          this.filePath = path.join(logDir, fileName);
  
          this.stream = fs.createWriteStream(this.filePath, {flags : 'a'});
      }