[551826] Allow any PivotableElementCS for installPivotUsage
diff --git a/plugins/org.eclipse.ocl.xtext.base/src/org/eclipse/ocl/xtext/base/cs2as/CS2AS.java b/plugins/org.eclipse.ocl.xtext.base/src/org/eclipse/ocl/xtext/base/cs2as/CS2AS.java
index 55cbf7c..60bc13f 100644
--- a/plugins/org.eclipse.ocl.xtext.base/src/org/eclipse/ocl/xtext/base/cs2as/CS2AS.java
+++ b/plugins/org.eclipse.ocl.xtext.base/src/org/eclipse/ocl/xtext/base/cs2as/CS2AS.java
@@ -61,6 +61,7 @@
 import org.eclipse.ocl.xtext.basecs.MultiplicityCS;
 import org.eclipse.ocl.xtext.basecs.PathElementCS;
 import org.eclipse.ocl.xtext.basecs.PathNameCS;
+import org.eclipse.ocl.xtext.basecs.PivotableElementCS;
 import org.eclipse.ocl.xtext.basecs.RootCS;
 import org.eclipse.ocl.xtext.basecs.TypedRefCS;
 import org.eclipse.ocl.xtext.basecs.TypedTypeRefCS;
@@ -522,7 +523,7 @@
 	 * are associated with a single pivot element. In this case one of the CS elements is the defining CS element and the
 	 * others are users.
 	 */
-	public void installPivotUsage(@NonNull ModelElementCS csElement, @NonNull Element newPivotElement) {
+	public void installPivotUsage(@NonNull PivotableElementCS csElement, @NonNull Element newPivotElement) {
 		//	logger.trace("Installing " + csElement.getDescription()); //$NON-NLS-1$ //$NON-NLS-2$
 		EObject oldPivotElement = csElement.getPivot();
 		if (oldPivotElement != newPivotElement) {
diff --git a/plugins/org.eclipse.ocl.xtext.base/src/org/eclipse/ocl/xtext/base/cs2as/CS2ASConversion.java b/plugins/org.eclipse.ocl.xtext.base/src/org/eclipse/ocl/xtext/base/cs2as/CS2ASConversion.java
index ef187e2..901547c 100644
--- a/plugins/org.eclipse.ocl.xtext.base/src/org/eclipse/ocl/xtext/base/cs2as/CS2ASConversion.java
+++ b/plugins/org.eclipse.ocl.xtext.base/src/org/eclipse/ocl/xtext/base/cs2as/CS2ASConversion.java
@@ -734,7 +734,7 @@
 		converter.installPivotReference(csElement, newPivotElement, eReference);
 	}
 
-	public void installPivotUsage(@NonNull ModelElementCS csElement, @NonNull Element newPivotElement) {
+	public void installPivotUsage(@NonNull PivotableElementCS csElement, @NonNull Element newPivotElement) {
 		converter.installPivotUsage(csElement, newPivotElement);
 	}