code: function (/*Object*/ dest) /*-> Object*/ {	// merge src properties into dest
  		var sources = Array.prototype.slice.call(arguments, 1);
  		for (var j = 0, len = sources.length, src; j < len; j++) {
  			src = sources[j] || {};
  			TL.Util.mergeData(dest, src);
  		}
  		return dest;
  	}
docs: like TL.Util.mergeData but takes an arbitrarily long list of sources to merge.