IWorkingSet workingSet= queryWorkingSet(); if (workingSet == null) return null;
IWorkingSet workingSet= fWorkingSet; if (fWorkingSet == null) { workingSet= queryWorkingSet(); if (workingSet == null) return null; }
	protected JavaSearchOperation makeOperation(IJavaElement element) throws JavaModelException {		IWorkingSet workingSet= queryWorkingSet();		if (workingSet == null)			return null;		updateLRUWorkingSet(workingSet);		return new JavaSearchOperation(JavaPlugin.getWorkspace(), element, getLimitTo(), getScope(workingSet), getScopeDescription(workingSet), getCollector());	};