field visibility changed to private
diff --git a/org.eclipse.emf.refactor.metrics.generator/src/org/eclipse/emf/refactor/metrics/generator/managers/GenerationManager.java b/org.eclipse.emf.refactor.metrics.generator/src/org/eclipse/emf/refactor/metrics/generator/managers/GenerationManager.java
index f2ad5a7..0d38016 100644
--- a/org.eclipse.emf.refactor.metrics.generator/src/org/eclipse/emf/refactor/metrics/generator/managers/GenerationManager.java
+++ b/org.eclipse.emf.refactor.metrics.generator/src/org/eclipse/emf/refactor/metrics/generator/managers/GenerationManager.java
@@ -28,7 +28,7 @@
 
 public class GenerationManager {
 	
-	protected static GenerationManager instance;
+	private static GenerationManager instance;
 	private static final String COMPOSITE_TEMPLATE_CLASS_NAME = "CompositeCalculateClassTemplate";
 	private static final String SKELETON_TEMPLATE_CLASS_NAME = "CalculateClassTemplate";
 	private static final  String TEMPLATE_DIR = "/templates";