* @throws PortletInvokerException any portlet invoker exception
*/
private void getPropertiesFromMetaData(PortletContext portletContext, PropertyMap props) throws PortletInvokerException
{
//
Portlet portlet = super.getPortlet(portletContext);
// The prefs info
PreferencesInfo prefs = portlet.getInfo().getPreferences();
// Collect missing or read only properties from the referenced portlet
Set<String> keys = new HashSet<String>();
for (String key : prefs.getKeys())
{