diff --git a/lib/private/Files/Config/MountProviderCollection.php b/lib/private/Files/Config/MountProviderCollection.php
index 2b57ffe6e4c0d70e58892017946b56c8ecf03dad..3900e9870bdf520a090a8bcd37874186e890f2fe 100644
--- a/lib/private/Files/Config/MountProviderCollection.php
+++ b/lib/private/Files/Config/MountProviderCollection.php
@@ -207,6 +207,12 @@ class MountProviderCollection implements IMountProviderCollection, Emitter {
 		$this->rootProviders[] = $provider;
 	}
 
+	/**
+	 * Get all root mountpoints
+	 *
+	 * @return \OCP\Files\Mount\IMountPoint[]
+	 * @since 20.0.0
+	 */
 	public function getRootMounts(): array {
 		$loader = $this->loader;
 		$mounts = array_map(function (IRootMountProvider $provider) use ($loader) {
diff --git a/lib/private/legacy/OC_Util.php b/lib/private/legacy/OC_Util.php
index 0be615a8e1d317a971f4facb89a2cd636831de92..f2aa0545afda749a569ce863981ef23d594c8727 100644
--- a/lib/private/legacy/OC_Util.php
+++ b/lib/private/legacy/OC_Util.php
@@ -299,7 +299,6 @@ class OC_Util {
 
 		/** @var \OCP\Files\Config\IMountProviderCollection $mountProviderCollection */
 		$mountProviderCollection = \OC::$server->query(\OCP\Files\Config\IMountProviderCollection::class);
-		/** @var \OCP\Files\Mount\IMountPoint[] $rootMountProviders */
 		$rootMountProviders = $mountProviderCollection->getRootMounts();
 
 		/** @var \OC\Files\Mount\Manager $mountManager */
diff --git a/lib/public/Files/Config/IMountProviderCollection.php b/lib/public/Files/Config/IMountProviderCollection.php
index 89b333b3e85323c12b0eff48f328624ad018c22e..a4131514662e90d7c45448f01d1264d0b62259bf 100644
--- a/lib/public/Files/Config/IMountProviderCollection.php
+++ b/lib/public/Files/Config/IMountProviderCollection.php
@@ -79,4 +79,12 @@ interface IMountProviderCollection {
 	 * @since 9.0.0
 	 */
 	public function getMountCache();
+
+	/**
+	 * Get all root mountpoints
+	 *
+	 * @return \OCP\Files\Mount\IMountPoint[]
+	 * @since 20.0.0
+	 */
+	public function getRootMounts(): array;
 }
diff --git a/lib/public/Files/Config/IRootMountProvider.php b/lib/public/Files/Config/IRootMountProvider.php
index 0f7b0eca3d4b148e3a934a84016a3b1e177ff6dd..745fa530bedd7bb1c94571161e8d88463a0153ca 100644
--- a/lib/public/Files/Config/IRootMountProvider.php
+++ b/lib/public/Files/Config/IRootMountProvider.php
@@ -32,7 +32,7 @@ use OCP\Files\Storage\IStorageFactory;
  */
 interface IRootMountProvider {
 	/**
-	 * Get all root mountpoints
+	 * Get all root mountpoints of this provider
 	 *
 	 * @return \OCP\Files\Mount\IMountPoint[]
 	 * @since 20.0.0