BlockedIp.php in core/modules/ban/src/Plugin/migrate/destination/BlockedIp.php
ShortcutSetUsers.php in core/modules/shortcut/src/Plugin/migrate/destination/ShortcutSetUsers.php
ThemeSettings.php in core/modules/system/src/Plugin/migrate/destination/d7/ThemeSettings.php
UserData.php in core/modules/user/src/Plugin/migrate/destination/UserData.php