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diff --git a/bundles/org.simantics.utils.datastructures/src/org/simantics/utils/datastructures/EmptyIterator.java b/bundles/org.simantics.utils.datastructures/src/org/simantics/utils/datastructures/EmptyIterator.java
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+++ b/bundles/org.simantics.utils.datastructures/src/org/simantics/utils/datastructures/EmptyIterator.java
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+/*******************************************************************************
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management
+ * in Industry THTH ry.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+package org.simantics.utils.datastructures;
+
+import java.util.Iterator;
+import java.util.NoSuchElementException;
+
+public final class EmptyIterator<T> implements Iterator<T> {
+
+	@Override
+	public boolean hasNext() {		
+		return false;
+	}
+
+	@Override
+	public T next() {
+		throw new NoSuchElementException();		
+	}
+
+	@Override
+	public void remove() {
+		throw new IllegalStateException();		
+	}
+
+	@SuppressWarnings({ "rawtypes" })
+    static public final EmptyIterator instance = new EmptyIterator();	
+
+}