docs: function() {
  			var args = arguments;
  			var argc = arguments.length;
  			return this.map(function(object) {
  				var selected = {};
  				for (var i in object)
  					if (object.hasOwnProperty(i))
  						selected[i] = object[i];
  				for (var i = 0; i < argc; i++)
  					delete selected[args[i]];
  				return selected;
  			});
  		}