PortletContext portletContext = getPortletProperties.getPortletContext();
WSRP2ExceptionFactory.throwMissingParametersIfValueIsMissing(portletContext, PORTLET_CONTEXT, GET_PORTLET_PROPERTIES);
Registration registration = producer.getRegistrationOrFailIfInvalid(getPortletProperties.getRegistrationContext());
UserContext userContext = getPortletProperties.getUserContext();
checkUserAuthorization(userContext);
List<String> names = getPortletProperties.getNames();
names = WSRPUtils.replaceByEmptyListIfNeeded(names);