Mentioned the support of hasser methods

Author: javiereguiluz

components/property_info.rst

@@ -236,10 +236,14 @@ provide whether properties are readable or writable as booleans.
     // Example Result: bool(false)
 
 The :class:`Symfony\\Component\\PropertyInfo\\Extractor\\ReflectionExtractor` looks
-for getter/isser/setter method in addition to whether or not a property is public
+for getter/isser/setter/hasser method in addition to whether or not a property is public
 to determine if it's accessible. This based on how the :doc:`PropertyAccess </components/property_access>`
 works.
 
+.. versionadded:: 4.1
+    The support of hasser methods in the ``ReflectionExtractor`` class was
+    introduced in Symfony 4.1.
+
 .. tip::
 
     The main :class:`Symfony\\Component\\PropertyInfo\\PropertyInfoExtractor`