String viewState = _facesContext.getApplication().getStateManager().getViewState(_facesContext);
if (viewState != null)
{
writer.startUpdate(PartialResponseWriter.VIEW_STATE_MARKER);
writer.write(viewState);
writer.endUpdate();
}
} catch (IOException ex) {
Logger log = Logger.getLogger(PartialViewContextImpl.class.getName());
if (log.isLoggable(Level.SEVERE)) {
log.log(Level.SEVERE, "" , ex);