Copyright (c) 2004-2013 Eike Stepper (Berlin, Germany) and others.
All rights reserved. This program and the accompanying materials
are made available under the terms of the Eclipse Public License 2.0
which accompanies this distribution, and is available at
https://www.eclipse.org/legal/epl-2.0/
SPDX-License-Identifier: EPL-2.0

Contributors:
   Eike Stepper - initial API and implementation