plugins/contracts/org.polarsys.chess.contracts.contractEditor/src/org/polarsys/chess/contracts/contractEditor/CustomContractEditorView.java

 /*******************************************************************************
  * Copyright (C) 2017 Fondazione Bruno Kessler.
  * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Eclipse Public License v1.0
+ * are made available under the terms of the Eclipse Public License v2.0
  * which accompanies this distribution, and is available at
- * http://www.eclipse.org/legal/epl-v10.html
+ * http://www.eclipse.org/legal/epl-v20.html
  * 
  * Contributors:
  *     Alberto Debiasi - initial API and implementation
@@ -351,4 +351,9 @@ public class CustomContractEditorView extends ContractEditorView {
 		return null;
 	}
 
+	@Override
+	public boolean isClockAttribute(Object attribute) {
+		// TODO Auto-generated method stub
+		return false;
+	}
 }