code: function( rules, priority, options ) {
  			var args = [ this.findIndex( priority ), 0 ];
  
  			for ( var i = 0, len = rules.length; i < len; i++ ) {
  				args.push( {
  					value: rules[ i ],
  					priority: priority,
  					options: options
  				} );
  			}
  
  			this.rules.splice.apply( this.rules, args );
  		}
docs: Adds specified rules to this group.
  
  @param {Array} rules Array of rules - see {@link #add}.
  @param {Number} priority
  @param options