Bug 302791 [CommonNavigator] Associated editor does not close when deleting resource (editorInput) through CommonNavigator
bundles/org.eclipse.ui.navigator/src/org/eclipse/ui/internal/navigator/extensions/NavigatorContentDescriptor.java
String hashCodeString = configElement.getNamespaceIdentifier() + getId();
			hashCode = hashCodeString.hashCode();
			if (hashCode == HASH_CODE_NOT_COMPUTED)
				hashCode++;
		}
		return hashCode;
	}
	/**
	 * @return The descriptor of the <code>suppressedExtensionId</code> if
	 *         non-null.
	 */
	public INavigatorContentDescriptor getOverriddenDescriptor() {
		return overriddenDescriptor;
	}
	/**
	 * @param theOverriddenDescriptor
	 *            The overriddenDescriptor to set.
	 */
	void setOverriddenDescriptor(
			INavigatorContentDescriptor theOverriddenDescriptor) {
		overriddenDescriptor = theOverriddenDescriptor;
	}
	/* (non-Javadoc)
	 * @see org.eclipse.ui.navigator.INavigatorContentDescriptor#hasSaveablesProvider()
	 */
	public boolean hasSaveablesProvider() {
		return providesSaveables;
	}
}