docs: add method signature change

Author: kenjis

user_guide_src/source/changelogs/v4.4.0.rst

@@ -40,6 +40,8 @@ Interface Changes
 
 - **Validation:** Added the ``getValidated()`` method in ``ValidationInterface``.
 
+.. _v440-method-signature-changes:
+
 Method Signature Changes
 ========================
 
@@ -52,6 +54,8 @@ Method Signature Changes
 - **Session:** The first parameter of ``__construct()`` in ``BaseHandler``,
   ``DatabaseHandler``, ``FileHandler``, ``MemcachedHandler``, and ``RedisHandler``
   has been changed from ``Config\App`` to ``Config\Session``.
+- **Security:** The first parameter of ``Security::__construct()`` has been
+  changed from ``Config\App`` to ``Config\Security``.
 
 Enhancements
 ************

user_guide_src/source/installation/upgrade_440.rst

@@ -75,6 +75,13 @@ performance.
 If you extend ``RouteCollection`` and use the ``$routes``, update your code to
 match the new array structure.
 
+Method Signature Changes
+========================
+
+Some method signature changes have been made. Classes that extend them should
+update their APIs to reflect the changes. See :ref:`v440-method-signature-changes`
+for details.
+
 Mandatory File Changes
 **********************