3 files changed, 8 insertions, 15 deletions
diff --git a/lib/private/Files/Node/Folder.php b/lib/private/Files/Node/Folder.php
index 9714a0aea00..41bac26248b 100644
--- a/lib/private/Files/Node/Folder.php
+++ b/lib/private/Files/Node/Folder.php
@@ -330,12 +330,8 @@ class Folder extends Node implements \OCP\Files\Folder {
 	 * @return array
 	 */
 	protected function getByIdInRootMount(int $id): array {
-		$storage = null;
-		if (\method_exists($this->root, 'getMount')) {
-			/** @var IMountPoint $mount */
-			$mount = $this->root->getMount('');
-			$storage = $mount->getStorage();
-		}
+		$mount = $this->root->getMount('');
+		$storage = $mount->getStorage();
 		$cacheEntry = $storage?->getCache($this->path)->get($id);
 		if (!$cacheEntry) {
 			return [];
diff --git a/lib/private/Files/Node/LazyFolder.php b/lib/private/Files/Node/LazyFolder.php
index c843baabade..9f9528f69bd 100644
--- a/lib/private/Files/Node/LazyFolder.php
+++ b/lib/private/Files/Node/LazyFolder.php
@@ -29,6 +29,7 @@ namespace OC\Files\Node;
 use OC\Files\Utils\PathHelper;
 use OCP\Files\Folder;
 use OCP\Constants;
+use OCP\Files\Mount\IMountPoint;
 
 /**
  * Class LazyFolder
@@ -111,14 +112,14 @@ class LazyFolder implements Folder {
 	/**
 	 * @inheritDoc
 	 */
-	public function getMount($mountPoint) {
+	public function getMount(string $mountPoint): IMountPoint {
 		return $this->__call(__FUNCTION__, func_get_args());
 	}
 
 	/**
-	 * @inheritDoc
+	 * @return IMountPoint[]
 	 */
-	public function getMountsIn($mountPoint) {
+	public function getMountsIn(string $mountPoint): array {
 		return $this->__call(__FUNCTION__, func_get_args());
 	}
 
diff --git a/lib/private/Files/Node/Root.php b/lib/private/Files/Node/Root.php
index 0ed1bcab2ae..7bd88981ff2 100644
--- a/lib/private/Files/Node/Root.php
+++ b/lib/private/Files/Node/Root.php
@@ -154,11 +154,7 @@ class Root extends Folder implements IRootFolder {
 		$this->mountManager->addMount($mount);
 	}
 
-	/**
-	 * @param string $mountPoint
-	 * @return \OC\Files\Mount\MountPoint
-	 */
-	public function getMount($mountPoint) {
+	public function getMount(string $mountPoint): IMountPoint {
 		return $this->mountManager->find($mountPoint);
 	}
 
@@ -166,7 +162,7 @@ class Root extends Folder implements IRootFolder {
 	 * @param string $mountPoint
 	 * @return \OC\Files\Mount\MountPoint[]
 	 */
-	public function getMountsIn($mountPoint) {
+	public function getMountsIn(string $mountPoint): array {
 		return $this->mountManager->findIn($mountPoint);
 	}