*/
private void validateExpressionRefs() throws QuickFixException {
for (PropertyReference e : expressionRefs) {
String root = e.getRoot();
ValueProviderType vpt = ValueProviderType.getTypeByPrefix(root);
if (vpt == null) {
// validate that its a foreachs
} else if (vpt.isGlobal()) {
AuraContext lc = Aura.getContextService().getCurrentContext();
GlobalValueProvider gvp = lc.getGlobalProviders().get(vpt);
if (gvp != null) {
PropertyReference stem = e.getStem();
if (stem == null) {