if (contentTypes == null) {
contentTypes = new Vector();
PortletDD dd = internalPortletWindow.getPortletEntity().getPortletDefinition();
Iterator supports = dd.getSupports().iterator();
while (supports.hasNext()) {
SupportsDD sup = (SupportsDD) supports.next();
contentTypes.add(sup.getMimeType());
}
if (contentTypes.size() < 1) {
contentTypes.add("text/html");
}
}