* @return <code>true</code> if the current Registration knows about the specified PortletContext, <code>false</code> otherwise
* @throws PortletInvokerException
*/
private boolean isPortletContextKnown(PortletContext portletContext) throws PortletInvokerException
{
final PortletStatus status = super.getStatus(portletContext);
if (PortletStatus.OFFERED == status)
{
// if the portlet is offered, then no need to check further
return true;
}