code: function() {
      var oThis = this;
  
      var argsPassed = oThis._filterArgs(arguments);
  
      var args = [oThis.getPrefix(this.ERR_PRE)];
      args = args.concat(Array.prototype.slice.call(argsPassed));
      args.push(this.CONSOLE_RESET);
      console.log.apply(console, args);
    }
docs: Log level error methods