Bug 49182 What should canceling setRawClasspath do ?
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/viewsupport/GoToBackProgressMonitorDialog.java
}
			
			if (fInBackground) {
				return;
			}
			
			if (name == null)
				task= "";
			else	
				task= name;
			
			getShell().getDisplay().asyncExec(new Runnable() {
				public void run() {
					internalSetTaskName(name);
				}
			});
		}
				
		private void internalSetTaskName(String name) {
			String s= task;
			if (s.length() <= 0)
				s= DEFAULT_TASKNAME;
			setDialogMessage(s);
		}
		public boolean isCanceled() {
			return fIsCanceled || (fWrapped != null && fWrapped.isCanceled());
		}
		
		public void setCanceled(boolean b) {
			if (fWrapped != null) {