Merge pull request #10520 from nextcloud/backport/10484/stable27

[stable27] Update User migration docs for 32-bit support

Author: nickvergessen

developer_manual/app_publishing_maintenance/app_upgrade_guide/upgrade_to_27.rst

@@ -46,6 +46,10 @@ Added APIs
 * New property ``$actionLabel`` has been added to the ``\OCP\Files\Template\TemplateFileCreator`` class with a respective setter ``TemplateFileCreator::setActionLabel`` and getter ``TemplateFileCreator::getActionLabel``.  (`nextcloud/server#37929 <https://github.com/nextcloud/server/pull/37929>`_ + `nextcloud/server#37955 <https://github.com/nextcloud/server/pull/37955>`_)
 * A new interface ``\OCP\Group\Backend\ISearchableGroupBackend`` was added for group backends supporting new method ``searchInGroup`` to search among a group users in an efficient way. (`nextcloud/server#32866 <https://github.com/nextcloud/server/pull/32866>`_)
 
+Changed APIs
+^^^^^^^^^^^^
+
+* ``\OCP\UserMigration\ISizeEstimationMigrator::getEstimatedExportSize()`` now returns ``int|float`` to support 32-bit systems. (`nextcloud/server#38104 <https://github.com/nextcloud/server/pull/38104>`_)
 
 Deprecated APIs
 ^^^^^^^^^^^^^^^

developer_manual/digging_deeper/user_migration.rst

@@ -60,8 +60,9 @@ whenever a user export or import begins.
      * Should be fast, favor performance over accuracy.
      *
      * @since 25.0.0
+     * @since 27.0.0 return value may overflow from int to float
      */
-    public function getEstimatedExportSize(IUser $user): int {
+    public function getEstimatedExportSize(IUser $user): int|float {
       $size = 100; // 100KiB for user data JSON
       return $size;
     }