visibility of methdo is more explicit

Author: Halleck45

src/Hal/Component/OOP/Reflected/ReflectedMethod.php

@@ -20,9 +20,9 @@
  */
 class ReflectedMethod {
 
-    CONST VISIBILITY_PUBLIC = 1;
-    CONST VISIBILITY_PRIVATE = 2;
-    CONST VISIBILITY_PROTECTED = 3;
+    CONST VISIBILITY_PUBLIC = 'public';
+    CONST VISIBILITY_PRIVATE = 'private';
+    CONST VISIBILITY_PROTECTED = 'protected';
     CONST STATE_LOCAL = 1;
     CONST STATE_STATIC = 2;