Bug 20446 cannot create protected or private interfaces [code manipulation]
F3 the spec allows creating protected or private nested interfaces but eclipse disallows it (the new interface wizard)
org.eclipse.jdt.ui/ui/org/eclipse/jdt/ui/wizards/NewTypeWizardPage.java
/**
	 * Class used in stub creation routines to add needed imports to a 
	 * compilation unit.
	 */
	public static class ImportsManager {