@SuppressWarnings("unchecked")
    private boolean isNotUsedInstaller(final ItemInfo info) {
        return info.getItemType() == ConfigItem.Installer
                && service.getExtensions((Class<FeatureInstaller>) info.getType()).isEmpty();
    }
@ SuppressWarnings ( "unchecked" ) private boolean isNotUsedInstaller ( final ItemInfo info ) { return info . getItemType ( ) == ConfigItem . Installer && service . getExtensions ( ( Class < FeatureInstaller > ) info . getType ( ) ) . isEmpty ( ) ; }
@param info item info
@return true if item is installer and no extensions were installed with it, false otherwise