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<title>[43067] branches/4.9/tests: REST API: Add `who=authors` as a query parameter for `GET wp/v2/users`.</title>
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<dt style="float: left; width: 6em; font-weight: bold">Revision</dt> <dd><a style="font-weight: bold" href="https://core.trac.wordpress.org/changeset/43067">43067</a><script type="application/ld+json">{"@context":"http://schema.org","@type":"EmailMessage","description":"Review this Commit","action":{"@type":"ViewAction","url":"https://core.trac.wordpress.org/changeset/43067","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>SergeyBiryukov</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2018-05-01 22:17:26 +0000 (Tue, 01 May 2018)</dd>
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<pre style='padding-left: 1em; margin: 2em 0; border-left: 2px solid #ccc; line-height: 1.25; font-size: 105%; font-family: sans-serif'>REST API: Add `who=authors` as a query parameter for `GET wp/v2/users`.

Any WordPress user who can `edit_posts` of a post type with `show_in_rest=true` can query for authors. This maps to current WordPress behavior where a WordPress user who can view the Manage Posts view for a post type can see any WordPress user assigned to a post (whether published or draft).

This implementation, over restricting `who=authors` to users with `list_users`, gives us future flexibility in displaying lists of posts. It still respects more restrictive permissions for `context=edit`.

Props danielbachhuber.
Merges <a href="https://core.trac.wordpress.org/changeset/43001">[43001]</a> to the 4.9 branch.
Fixes <a href="https://core.trac.wordpress.org/ticket/42202">#42202</a>.</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#branches49srcwpincludesrestapiendpointsclasswprestuserscontrollerphp">branches/4.9/src/wp-includes/rest-api/endpoints/class-wp-rest-users-controller.php</a></li>
<li><a href="#branches49testsphpunittestsrestapirestuserscontrollerphp">branches/4.9/tests/phpunit/tests/rest-api/rest-users-controller.php</a></li>
<li><a href="#branches49testsqunitfixtureswpapigeneratedjs">branches/4.9/tests/qunit/fixtures/wp-api-generated.js</a></li>
</ul>

<h3>Property Changed</h3>
<ul>
<li><a href="#branches49">branches/4.9/</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<span class="cx" style="display: block; padding: 0 10px">Index: branches/4.9
</span><span class="cx" style="display: block; padding: 0 10px">===================================================================
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">--- branches/4.9 2018-05-01 22:09:09 UTC (rev 43066)
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+++ branches/4.9  2018-05-01 22:17:26 UTC (rev 43067)
</ins><a id="branches49"></a>
<div class="propset"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Property changes: branches/4.9</h4>
<pre class="diff"><span>
</span></pre></div>
<a id="svnmergeinfo"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: svn:mergeinfo</h4></div>
<span class="cx" style="display: block; padding: 0 10px"> /branches/3.1:18031
</span><span class="cx" style="display: block; padding: 0 10px"> /branches/3.3:20543
</span><span class="cx" style="display: block; padding: 0 10px"> /branches/3.4:21757
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-/trunk:18512,42132,42134,42136,42138,42140,42144,42146,42148,42150,42152-42153,42155,42157,42159,42161,42163,42169,42171,42173,42175,42177,42181,42183,42185,42187,42189,42191,42193,42199,42203,42210,42214,42220,42222,42226,42242,42244,42247,42251,42256-42261,42350,42358,42362,42364-42368,42374,42388,42390,42401,42417,42421,42423-42425,42430,42433,42437,42441,42443,42446-42447,42449,42451,42453,42457,42459,42462,42491,42521,42529,42531,42533,42536,42538,42541,42543,42545,42549,42566,42568,42570,42572,42574,42576,42579,42581-42582,42584-42585,42587-42588,42590,42592,42594-42595,42598-42599,42602,42604,42606,42611-42613,42615,42617,42624-42625,42639,42648,42652-42653,42665,42687,42711,42713,42719,42722,42739-42740,42744,42758,42792,42801,42817-42818,42830,42837,42839,42841,42844,42851-42852,42860,42864,42881,42892-42894,42930,42998,43007,43025,43027,43030,43032,43034,43036,43039,43056,43062
 -43063,43065
</del><span class="cx" style="display: block; padding: 0 10px">\ No newline at end of property
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+/trunk:18512,42132,42134,42136,42138,42140,42144,42146,42148,42150,42152-42153,42155,42157,42159,42161,42163,42169,42171,42173,42175,42177,42181,42183,42185,42187,42189,42191,42193,42199,42203,42210,42214,42220,42222,42226,42242,42244,42247,42251,42256-42261,42350,42358,42362,42364-42368,42374,42388,42390,42401,42417,42421,42423-42425,42430,42433,42437,42441,42443,42446-42447,42449,42451,42453,42457,42459,42462,42491,42521,42529,42531,42533,42536,42538,42541,42543,42545,42549,42566,42568,42570,42572,42574,42576,42579,42581-42582,42584-42585,42587-42588,42590,42592,42594-42595,42598-42599,42602,42604,42606,42611-42613,42615,42617,42624-42625,42639,42648,42652-42653,42665,42687,42711,42713,42719,42722,42739-42740,42744,42758,42792,42801,42817-42818,42830,42837,42839,42841,42844,42851-42852,42860,42864,42881,42892-42894,42930,42998,43001,43007,43025,43027,43030,43032,43034,43036,43039,43056
 ,43062-43063,43065
</ins><span class="cx" style="display: block; padding: 0 10px">\ No newline at end of property
</span><a id="branches49srcwpincludesrestapiendpointsclasswprestuserscontrollerphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/4.9/src/wp-includes/rest-api/endpoints/class-wp-rest-users-controller.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/4.9/src/wp-includes/rest-api/endpoints/class-wp-rest-users-controller.php        2018-05-01 22:09:09 UTC (rev 43066)
+++ branches/4.9/src/wp-includes/rest-api/endpoints/class-wp-rest-users-controller.php  2018-05-01 22:17:26 UTC (rev 43067)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -186,6 +186,19 @@
</span><span class="cx" style="display: block; padding: 0 10px">                        return new WP_Error( 'rest_forbidden_orderby', __( 'Sorry, you are not allowed to order users by this parameter.' ), array( 'status' => rest_authorization_required_code() ) );
</span><span class="cx" style="display: block; padding: 0 10px">                }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                if ( 'authors' === $request['who'] ) {
+                       $can_view = false;
+                       $types = get_post_types( array( 'show_in_rest' => true ), 'objects' );
+                       foreach ( $types as $type ) {
+                               if ( current_user_can( $type->cap->edit_posts ) ) {
+                                       $can_view = true;
+                               }
+                       }
+                       if ( ! $can_view ) {
+                               return new WP_Error( 'rest_forbidden_who', __( 'Sorry, you are not allowed to query users by this parameter.' ), array( 'status' => rest_authorization_required_code() ) );
+                       }
+               }
+
</ins><span class="cx" style="display: block; padding: 0 10px">                 return true;
</span><span class="cx" style="display: block; padding: 0 10px">        }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -250,7 +263,9 @@
</span><span class="cx" style="display: block; padding: 0 10px">                        $prepared_args['orderby'] = $orderby_possibles[ $request['orderby'] ];
</span><span class="cx" style="display: block; padding: 0 10px">                }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                if ( ! current_user_can( 'list_users' ) ) {
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         if ( isset( $registered['who'] ) && ! empty( $request['who'] ) && 'authors' === $request['who'] ) {
+                       $prepared_args['who'] = 'authors';
+               } elseif ( ! current_user_can( 'list_users' ) ) {
</ins><span class="cx" style="display: block; padding: 0 10px">                         $prepared_args['has_published_posts'] = get_post_types( array( 'show_in_rest' => true ), 'names' );
</span><span class="cx" style="display: block; padding: 0 10px">                }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -1362,6 +1377,14 @@
</span><span class="cx" style="display: block; padding: 0 10px">                        ),
</span><span class="cx" style="display: block; padding: 0 10px">                );
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                $query_params['who'] = array(
+                       'description' => __( 'Limit result set to users who are considered authors.' ),
+                       'type'        => 'string',
+                       'enum'        => array(
+                               'authors',
+                       ),
+               );
+
</ins><span class="cx" style="display: block; padding: 0 10px">                 /**
</span><span class="cx" style="display: block; padding: 0 10px">                 * Filter collection parameters for the users controller.
</span><span class="cx" style="display: block; padding: 0 10px">                 *
</span></span></pre></div>
<a id="branches49testsphpunittestsrestapirestuserscontrollerphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/4.9/tests/phpunit/tests/rest-api/rest-users-controller.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/4.9/tests/phpunit/tests/rest-api/rest-users-controller.php       2018-05-01 22:09:09 UTC (rev 43066)
+++ branches/4.9/tests/phpunit/tests/rest-api/rest-users-controller.php 2018-05-01 22:17:26 UTC (rev 43067)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -14,6 +14,7 @@
</span><span class="cx" style="display: block; padding: 0 10px">        protected static $user;
</span><span class="cx" style="display: block; padding: 0 10px">        protected static $editor;
</span><span class="cx" style="display: block; padding: 0 10px">        protected static $draft_editor;
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+        protected static $subscriber;
</ins><span class="cx" style="display: block; padding: 0 10px">         protected static $authors = array();
</span><span class="cx" style="display: block; padding: 0 10px">        protected static $posts = array();
</span><span class="cx" style="display: block; padding: 0 10px">        protected static $site;
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -34,6 +35,13 @@
</span><span class="cx" style="display: block; padding: 0 10px">                        'role'       => 'editor',
</span><span class="cx" style="display: block; padding: 0 10px">                        'user_email' => 'draft-editor@example.com',
</span><span class="cx" style="display: block; padding: 0 10px">                ) );
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                self::$subscriber    = $factory->user->create(
+                       array(
+                               'role'         => 'subscriber',
+                               'display_name' => 'subscriber',
+                               'user_email'   => 'subscriber@example.com',
+                       )
+               );
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                foreach ( array( true, false ) as $show_in_rest ) {
</span><span class="cx" style="display: block; padding: 0 10px">                        foreach ( array( true, false ) as $public ) {
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -142,6 +150,7 @@
</span><span class="cx" style="display: block; padding: 0 10px">                        'roles',
</span><span class="cx" style="display: block; padding: 0 10px">                        'search',
</span><span class="cx" style="display: block; padding: 0 10px">                        'slug',
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                        'who',
</ins><span class="cx" style="display: block; padding: 0 10px">                         ), $keys );
</span><span class="cx" style="display: block; padding: 0 10px">        }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -253,7 +262,7 @@
</span><span class="cx" style="display: block; padding: 0 10px">                $request = new WP_REST_Request( 'GET', '/wp/v2/users' );
</span><span class="cx" style="display: block; padding: 0 10px">                $response = $this->server->dispatch( $request );
</span><span class="cx" style="display: block; padding: 0 10px">                $headers = $response->get_headers();
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                $this->assertEquals( 53, $headers['X-WP-Total'] );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         $this->assertEquals( 54, $headers['X-WP-Total'] );
</ins><span class="cx" style="display: block; padding: 0 10px">                 $this->assertEquals( 6, $headers['X-WP-TotalPages'] );
</span><span class="cx" style="display: block; padding: 0 10px">                $next_link = add_query_arg( array(
</span><span class="cx" style="display: block; padding: 0 10px">                        'page'    => 2,
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -268,7 +277,7 @@
</span><span class="cx" style="display: block; padding: 0 10px">                $request->set_param( 'page', 3 );
</span><span class="cx" style="display: block; padding: 0 10px">                $response = $this->server->dispatch( $request );
</span><span class="cx" style="display: block; padding: 0 10px">                $headers = $response->get_headers();
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                $this->assertEquals( 54, $headers['X-WP-Total'] );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         $this->assertEquals( 55, $headers['X-WP-Total'] );
</ins><span class="cx" style="display: block; padding: 0 10px">                 $this->assertEquals( 6, $headers['X-WP-TotalPages'] );
</span><span class="cx" style="display: block; padding: 0 10px">                $prev_link = add_query_arg( array(
</span><span class="cx" style="display: block; padding: 0 10px">                        'page'    => 2,
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -283,7 +292,7 @@
</span><span class="cx" style="display: block; padding: 0 10px">                $request->set_param( 'page', 6 );
</span><span class="cx" style="display: block; padding: 0 10px">                $response = $this->server->dispatch( $request );
</span><span class="cx" style="display: block; padding: 0 10px">                $headers = $response->get_headers();
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                $this->assertEquals( 54, $headers['X-WP-Total'] );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         $this->assertEquals( 55, $headers['X-WP-Total'] );
</ins><span class="cx" style="display: block; padding: 0 10px">                 $this->assertEquals( 6, $headers['X-WP-TotalPages'] );
</span><span class="cx" style="display: block; padding: 0 10px">                $prev_link = add_query_arg( array(
</span><span class="cx" style="display: block; padding: 0 10px">                        'page'    => 5,
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -295,7 +304,7 @@
</span><span class="cx" style="display: block; padding: 0 10px">                $request->set_param( 'page', 8 );
</span><span class="cx" style="display: block; padding: 0 10px">                $response = $this->server->dispatch( $request );
</span><span class="cx" style="display: block; padding: 0 10px">                $headers = $response->get_headers();
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                $this->assertEquals( 54, $headers['X-WP-Total'] );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         $this->assertEquals( 55, $headers['X-WP-Total'] );
</ins><span class="cx" style="display: block; padding: 0 10px">                 $this->assertEquals( 6, $headers['X-WP-TotalPages'] );
</span><span class="cx" style="display: block; padding: 0 10px">                $prev_link = add_query_arg( array(
</span><span class="cx" style="display: block; padding: 0 10px">                        'page'    => 6,
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -484,12 +493,12 @@
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">        public function test_get_items_offset() {
</span><span class="cx" style="display: block; padding: 0 10px">                wp_set_current_user( self::$user );
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                // 7 users created in wpSetUpBeforeClass(), plus default user.
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         // 9 users created in wpSetUpBeforeClass(), plus default user.
</ins><span class="cx" style="display: block; padding: 0 10px">                 $this->factory->user->create();
</span><span class="cx" style="display: block; padding: 0 10px">                $request = new WP_REST_Request( 'GET', '/wp/v2/users' );
</span><span class="cx" style="display: block; padding: 0 10px">                $request->set_param( 'offset', 1 );
</span><span class="cx" style="display: block; padding: 0 10px">                $response = $this->server->dispatch( $request );
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                $this->assertCount( 9, $response->get_data() );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         $this->assertCount( 10, $response->get_data() );
</ins><span class="cx" style="display: block; padding: 0 10px">                 // 'offset' works with 'per_page'
</span><span class="cx" style="display: block; padding: 0 10px">                $request->set_param( 'per_page', 2 );
</span><span class="cx" style="display: block; padding: 0 10px">                $response = $this->server->dispatch( $request );
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -663,9 +672,9 @@
</span><span class="cx" style="display: block; padding: 0 10px">                $request->set_param( 'roles', 'author,subscriber' );
</span><span class="cx" style="display: block; padding: 0 10px">                $response = $this->server->dispatch( $request );
</span><span class="cx" style="display: block; padding: 0 10px">                $data = $response->get_data();
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                $this->assertEquals( 2, count( $data ) );
-               $this->assertEquals( $tango, $data[0]['id'] );
-               $this->assertEquals( $yolo, $data[1]['id'] );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         $this->assertEquals( 3, count( $data ) );
+               $this->assertEquals( $tango, $data[1]['id'] );
+               $this->assertEquals( $yolo, $data[2]['id'] );
</ins><span class="cx" style="display: block; padding: 0 10px">                 $request->set_param( 'roles', 'author' );
</span><span class="cx" style="display: block; padding: 0 10px">                $response = $this->server->dispatch( $request );
</span><span class="cx" style="display: block; padding: 0 10px">                $data = $response->get_data();
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -698,6 +707,43 @@
</span><span class="cx" style="display: block; padding: 0 10px">                $this->assertEquals( array(), $data );
</span><span class="cx" style="display: block; padding: 0 10px">        }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+        public function test_get_items_who_author_query() {
+               wp_set_current_user( self::$superadmin );
+               // First request should include subscriber in the set.
+               $request = new WP_REST_Request( 'GET', '/wp/v2/users' );
+               $request->set_param( 'search', 'subscriber' );
+               $response = rest_get_server()->dispatch( $request );
+               $this->assertEquals( 200, $response->get_status() );
+               $this->assertCount( 1, $response->get_data() );
+               // Second request should exclude subscriber.
+               $request = new WP_REST_Request( 'GET', '/wp/v2/users' );
+               $request->set_param( 'who', 'authors' );
+               $request->set_param( 'search', 'subscriber' );
+               $response = rest_get_server()->dispatch( $request );
+               $this->assertEquals( 200, $response->get_status() );
+               $this->assertCount( 0, $response->get_data() );
+       }
+
+       public function test_get_items_who_invalid_query() {
+               wp_set_current_user( self::$user );
+               $request = new WP_REST_Request( 'GET', '/wp/v2/users' );
+               $request->set_param( 'who', 'editor' );
+               $response = rest_get_server()->dispatch( $request );
+               $this->assertErrorResponse( 'rest_invalid_param', $response, 400 );
+       }
+
+       /**
+        * Any user with 'edit_posts' on a show_in_rest post type
+        * can view authors. Others (e.g. subscribers) cannot.
+        */
+       public function test_get_items_who_unauthorized_query() {
+               wp_set_current_user( self::$subscriber );
+               $request = new WP_REST_Request( 'GET', '/wp/v2/users' );
+               $request->set_param( 'who', 'authors' );
+               $response = rest_get_server()->dispatch( $request );
+               $this->assertErrorResponse( 'rest_forbidden_who', $response, 403 );
+       }
+
</ins><span class="cx" style="display: block; padding: 0 10px">         public function test_get_item() {
</span><span class="cx" style="display: block; padding: 0 10px">                $user_id = $this->factory->user->create();
</span><span class="cx" style="display: block; padding: 0 10px">                wp_set_current_user( self::$user );
</span></span></pre></div>
<a id="branches49testsqunitfixtureswpapigeneratedjs"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/4.9/tests/qunit/fixtures/wp-api-generated.js</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/4.9/tests/qunit/fixtures/wp-api-generated.js     2018-05-01 22:09:09 UTC (rev 43066)
+++ branches/4.9/tests/qunit/fixtures/wp-api-generated.js       2018-05-01 22:17:26 UTC (rev 43067)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -2504,6 +2504,14 @@
</span><span class="cx" style="display: block; padding: 0 10px">                             "items": {
</span><span class="cx" style="display: block; padding: 0 10px">                                 "type": "string"
</span><span class="cx" style="display: block; padding: 0 10px">                             }
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                        },
+                        "who": {
+                            "required": false,
+                            "enum": [
+                                "authors"
+                            ],
+                            "description": "Limit result set to users who are considered authors.",
+                            "type": "string"
</ins><span class="cx" style="display: block; padding: 0 10px">                         }
</span><span class="cx" style="display: block; padding: 0 10px">                     }
</span><span class="cx" style="display: block; padding: 0 10px">                 },
</span></span></pre>
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