fix psalm attempt 2

Signed-off-by: szaimen <[email protected]>

Author: szaimen

apps/updatenotification/lib/Controller/AdminController.php

@@ -28,6 +28,7 @@
 namespace OCA\UpdateNotification\Controller;
 
 use OC\User\Backend;
+use OCP\User\Backend\ICountUsersBackend;
 use OCA\UpdateNotification\ResetTokenBackgroundJob;
 use OCP\AppFramework\Controller;
 use OCP\AppFramework\Http;
@@ -128,6 +129,7 @@ private function getUserCount(): int {
 		$backends = $this->userManager->getBackends();
 		foreach ($backends as $backend) {
 			if ($backend->implementsActions(Backend::COUNT_USERS)) {
+				/** @var ICountUsersBackend $backend */
 				$backendUsers = $backend->countUsers();
 				if ($backendUsers !== false) {
 					$userCount += $backendUsers;

build/psalm-baseline.xml

@@ -1876,9 +1876,6 @@
     </InvalidArgument>
   </file>
   <file src="apps/updatenotification/lib/Controller/AdminController.php">
-    <UndefinedInterfaceMethod occurrences="1">
-      <code>countUsers</code>
-    </UndefinedInterfaceMethod>
     <InvalidScalarArgument occurrences="2">
       <code>$this-&gt;timeFactory-&gt;getTime()</code>
       <code>0</code>