From 2a18aab80da04e3f0944ae02922ab9c0251586a3 Mon Sep 17 00:00:00 2001
From: Niels Dekker <N.Dekker@lumc.nl>
Date: Tue, 20 Sep 2022 17:04:13 +0200
Subject: [PATCH] STYLE: Make protected `Object::SubjectImplementation` members
 private

The internal helper class `SubjectImplementation` is not designed as a base
class, so in general, its members should be either `private` or `public`.
---
 Modules/Core/Common/src/itkObject.cxx | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/Modules/Core/Common/src/itkObject.cxx b/Modules/Core/Common/src/itkObject.cxx
index 843aba90ce9..d494f830550 100644
--- a/Modules/Core/Common/src/itkObject.cxx
+++ b/Modules/Core/Common/src/itkObject.cxx
@@ -88,7 +88,7 @@ class ITKCommon_HIDDEN Object::SubjectImplementation
 
   bool m_ListModified{ false };
 
-protected:
+private:
   // RAII of ListModified state to ensure exception safety
   struct SaveRestoreListModified
   {
@@ -111,7 +111,6 @@ class ITKCommon_HIDDEN Object::SubjectImplementation
   void
   InvokeEventRecursion(const EventObject & event, TObject * self, std::list<Observer>::reverse_iterator & i);
 
-private:
   std::list<Observer> m_Observers;
   unsigned long       m_Count;
 };