Internal change

PiperOrigin-RevId: 321596023

Author: Closure Team

contrib/externs/angular-material.js

@@ -179,6 +179,12 @@ md.$dialog.AlertConfig_.prototype.css = function(css) {};
  */
 md.$dialog.AlertConfig_.prototype.parent = function(parent) {};
 
+/**
+ * @param {boolean} multiple
+ * @return {!md.$dialog.AlertConfig_}
+ */
+md.$dialog.AlertConfig_.prototype.multiple = function(multiple) {};
+
 
 /** @constructor */
 md.$dialog.ConfirmConfig_;