Bug 96928 [1.5][model] Creating enum failed with exception in project with source level at 1.4
org.eclipse.jdt.ui/ui/org/eclipse/jdt/ui/wizards/NewTypeWizardPage.java
status.setError(""); 
		}
		return status;
	}
	private StubTypeContext getSuperClassStubTypeContext() {
		if (fSuperClassStubTypeContext == null) {
			String typeName;
			if (fCurrType != null) {
				typeName= getTypeName();
			} else {
				typeName= JavaTypeCompletionProcessor.DUMMY_CLASS_NAME;
			}
			fSuperClassStubTypeContext= TypeContextChecker.createSuperClassStubTypeContext(typeName, getEnclosingType(), getPackageFragment());
		}
		return fSuperClassStubTypeContext;
	}
	/**
	 * Hook method that gets called when the list of super interface has changed. The method 
	 * validates the super interfaces and returns the status of the validation.
	 * <p>
	 * Subclasses may extend this method to perform their own validation.
	 * </p>
	 * 
	 * @return the status of the validation
	 */
	protected IStatus superInterfacesChanged() {
		StatusInfo status= new StatusInfo();
		
		IPackageFragmentRoot root= getPackageFragmentRoot();
		fSuperInterfacesDialogField.enableButton(0, root != null);