java.util.EmptyStackException
	at java.util.Stack.peek(Stack.java:79)
	at java.util.Stack.pop(Stack.java:61)
	at org.netbeans.modules.javacore.parser.MDRParser.enterBody(MDRParser.java:208)
	at org.netbeans.modules.javacore.parser.MDRParser.doAttribution(MDRParser.java:174)
	at org.netbeans.modules.javacore.parser.MDRParser.isVariableAccess(MDRParser.java:1025)
	at org.netbeans.modules.javacore.jmiimpl.javamodel.MetadataElement.getElementProxy(MetadataElement.java:627)
	at org.netbeans.modules.javacore.jmiimpl.javamodel.MetadataElement.createElement(MetadataElement.java:548)
	at org.netbeans.modules.javacore.jmiimpl.javamodel.MetadataElement.initOrCreate(MetadataElement.java:1166)
	at org.netbeans.modules.javacore.jmiimpl.javamodel.AssignmentImpl.initChildren(AssignmentImpl.java:88)
	at org.netbeans.modules.javacore.jmiimpl.javamodel.AssignmentImpl.getLeftSide(AssignmentImpl.java:44)
	at org.netbeans.jmi.javamodel.Assignment$Impl.getLeftSide(Unknown Source)
	at org.netbeans.modules.javacore.jmiimpl.javamodel.AssignmentImpl.duplicate(AssignmentImpl.java:168)
	at org.netbeans.modules.javacore.jmiimpl.javamodel.MetadataElement.duplicateElement(MetadataElement.java:1805)
	at org.netbeans.modules.javacore.jmiimpl.javamodel.ExpressionStatementImpl.duplicate(ExpressionStatementImpl.java:109)
	at org.netbeans.modules.javacore.jmiimpl.javamodel.MetadataElement.duplicateList(MetadataElement.java:1792)
	at org.netbeans.modules.javacore.jmiimpl.javamodel.StatementBlockImpl.duplicate(StatementBlockImpl.java:138)
	at org.netbeans.modules.javacore.jmiimpl.javamodel.MetadataElement.duplicateElement(MetadataElement.java:1805)
	at org.netbeans.modules.javacore.jmiimpl.javamodel.MethodImpl.duplicate(MethodImpl.java:355)
	at org.netbeans.modules.refactoring.plugins.PushDownRefactoringPlugin$CopyMemberElement.performChange(PushDownRefactoringPlugin.java:230)
	at org.netbeans.modules.refactoring.api.RefactoringSession.doRefactoring(RefactoringSession.java:67)
	at org.netbeans.modules.refactoring.ui.RefactoringPanel$1.run(RefactoringPanel.java:579)
	at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:471)
[catch] at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:904)