Deprecated loadClassCache() method

Author: javiereguiluz

debug/debugging.rst

@@ -61,6 +61,11 @@ cache files, or you can change the extension used by Symfony for these files::
 
     $kernel->loadClassCache('classes', '.php.cache');
 
+.. versionadded:: 3.3
+    The ``loadClassCache()`` was deprecated in Symfony 3.3 and removed in
+    Symfony 4.0. No alternative is provided because this feature is useless
+    when using PHP 7 or higher.
+
 Useful Debugging Commands
 -------------------------