code: function() {
  		var self = this;
  
  		self.loadedSearches = {};
  		self.userOptions = {};
  		self.renderCache = {};
  		var options = self.options;
  		$.each(self.options, function(key, value) {
  			if(self.items.indexOf(key) == -1) {
  				delete options[key];
  			}
  		});
  		self.options = self.sifter.items = options;
  		self.lastQuery = null;
  		self.trigger('option_clear');
  	}
docs: Clears all options.