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diff --git a/tools/addon-sdk-1.3/packages/api-utils/lib/collection.js b/tools/addon-sdk-1.3/packages/api-utils/lib/collection.js
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index 5525a5a..0000000
--- a/tools/addon-sdk-1.3/packages/api-utils/lib/collection.js
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@@ -1,141 +0,0 @@
-/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
-/* vim:set ts=2 sw=2 sts=2 et: */
-/* ***** BEGIN LICENSE BLOCK *****
- * Version: MPL 1.1/GPL 2.0/LGPL 2.1
- *
- * The contents of this file are subject to the Mozilla Public License Version
- * 1.1 (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- * http://www.mozilla.org/MPL/
- *
- * Software distributed under the License is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
- * for the specific language governing rights and limitations under the
- * License.
- *
- * The Original Code is Jetpack.
- *
- * The Initial Developer of the Original Code is
- * the Mozilla Foundation.
- * Portions created by the Initial Developer are Copyright (C) 2010
- * the Initial Developer. All Rights Reserved.
- *
- * Contributor(s):
- *   Drew Willcoxon <adw@mozilla.com> (Original Author)
- *
- * Alternatively, the contents of this file may be used under the terms of
- * either the GNU General Public License Version 2 or later (the "GPL"), or
- * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
- * in which case the provisions of the GPL or the LGPL are applicable instead
- * of those above. If you wish to allow use of your version of this file only
- * under the terms of either the GPL or the LGPL, and not to allow others to
- * use your version of this file under the terms of the MPL, indicate your
- * decision by deleting the provisions above and replace them with the notice
- * and other provisions required by the GPL or the LGPL. If you do not delete
- * the provisions above, a recipient may use your version of this file under
- * the terms of any one of the MPL, the GPL or the LGPL.
- *
- * ***** END LICENSE BLOCK ***** */
-
-"use strict";
-
-exports.Collection = Collection;
-
-/**
- * Adds a collection property to the given object.  Setting the property to a
- * scalar value empties the collection and adds the value.  Setting it to an
- * array empties the collection and adds all the items in the array.
- *
- * @param obj
- *        The property will be defined on this object.
- * @param propName
- *        The name of the property.
- * @param array
- *        If given, this will be used as the collection's backing array.
- */
-exports.addCollectionProperty = function addCollProperty(obj, propName, array) {
-  array = array || [];
-  let publicIface = new Collection(array);
-
-  obj.__defineSetter__(propName, function (itemOrItems) {
-    array.splice(0, array.length);
-    publicIface.add(itemOrItems);
-  });
-
-  obj.__defineGetter__(propName, function () {
-    return publicIface;
-  });
-};
-
-/**
- * A collection is ordered, like an array, but its items are unique, like a set.
- *
- * @param array
- *        The collection is backed by an array.  If this is given, it will be
- *        used as the backing array.  This way the caller can fully control the
- *        collection.  Otherwise a new empty array will be used, and no one but
- *        the collection will have access to it.
- */
-function Collection(array) {
-  array = array || [];
-
-  /**
-   * Provides iteration over the collection.  Items are yielded in the order
-   * they were added.
-   */
-  this.__iterator__ = function Collection___iterator__() {
-    let items = array.slice();
-    for (let i = 0; i < items.length; i++)
-      yield items[i];
-  };
-
-  /**
-   * The number of items in the collection.
-   */
-  this.__defineGetter__("length", function Collection_get_length() {
-    return array.length;
-  });
-
-  /**
-   * Adds a single item or an array of items to the collection.  Any items
-   * already contained in the collection are ignored.
-   *
-   * @param  itemOrItems
-   *         An item or array of items.
-   * @return The collection.
-   */
-  this.add = function Collection_add(itemOrItems) {
-    let items = toArray(itemOrItems);
-    for (let i = 0; i < items.length; i++) {
-      let item = items[i];
-      if (array.indexOf(item) < 0)
-        array.push(item);
-    }
-    return this;
-  };
-
-  /**
-   * Removes a single item or an array of items from the collection.  Any items
-   * not contained in the collection are ignored.
-   *
-   * @param  itemOrItems
-   *         An item or array of items.
-   * @return The collection.
-   */
-  this.remove = function Collection_remove(itemOrItems) {
-    let items = toArray(itemOrItems);
-    for (let i = 0; i < items.length; i++) {
-      let idx = array.indexOf(items[i]);
-      if (idx >= 0)
-        array.splice(idx, 1);
-    }
-    return this;
-  };
-};
-
-function toArray(itemOrItems) {
-  let isArr = itemOrItems &&
-              itemOrItems.constructor &&
-              itemOrItems.constructor.name === "Array";
-  return isArr ? itemOrItems : [itemOrItems];
-}