Bug 19014 Empty CU after reorg
F2 - enable single click and show in members in packages view - open TestCase.java in editor - give focus to packages view - change it on disk - copy a method in TestCase using DnD - activate the TestCase.java editor - answer question with no - activate revert from context menu observe: CU is empty
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/CompilationUnitDocumentProvider.java
}
			
			/*
			 * @see IProblemAnnotation#getArguments()
			 */
			public String[] getArguments() {
				return fProblem.getArguments();
			}
			/*
			 * @see IProblemAnnotation#getId()
			 */
			public int getId() {
				return fProblem.getID();
			}
			/*
			 * @see IProblemAnnotation#isProblem()
			 */
			public boolean isProblem() {
				return true;
			}
			
			/*
			 * @see IProblemAnnotation#isRelevant()
			 */
			public boolean isRelevant() {
				return true;
			}
			
			/*
			 * @see IProblemAnnotation#hasOverlay()