Revert api break

Signed-off-by: Carl Schwan <carl@carlschwan.eu>

diff --git a/lib/public/IUser.php b/lib/public/IUser.php
index ce9cf0096ec37de9d2f233f0d7d92c62ee4825ff..daf993df6cd2dc690d08c2f69607b3456f25b2a8 100644 (file)
--- a/lib/public/IUser.php
+++ b/lib/public/IUser.php
@@ -112,10 +112,10 @@ interface IUser {
 
        /**
         * Get the backend for the current user object
-        *
+        * @return ?UserInterface
         * @since 15.0.0
         */
-       public function getBackend(): ?UserInterface;
+       public function getBackend();
 
        /**
         * check if the backend allows the user to change his avatar on Personal page