import lupos.misc.debug.DebugStepRIF;
import lupos.rif.datatypes.Predicate;
import lupos.rif.datatypes.RuleResult;
import xpref.datatypes.BooleanDatatype;
import xpref.datatypes.FontDatatype;
<BUG>public class EvaluationDemoToolBar extends JPanel implements DebugStepRIF {
</BUG>
private static final long serialVersionUID = 2228126871144675159L;
protected Viewer operatorGraphViewer;
protected ReentrantLock lock = new ReentrantLock();

import lupos.misc.debug.DebugStepRIF;
import lupos.rif.datatypes.Predicate;
import lupos.rif.datatypes.RuleResult;
import xpref.datatypes.BooleanDatatype;
import xpref.datatypes.FontDatatype;
public class EvaluationDemoToolBar extends JPanel implements DebugStepRIF, GetOperatorGraphViewer {
private static final long serialVersionUID = 2228126871144675159L;
protected Viewer operatorGraphViewer;
protected ReentrantLock lock = new ReentrantLock();
