Generating geronimo-plugins.xml

Hi All,
I try to create/generate geronimo-plugins.xml from existing repo without using maven.
Is there any gbean I can called?

I tried using code from car-maven-plugin but throws some exception.
Class used: org.apache.geronimo.mavenplugins.car.CreatePluginListMojo ()

xception in thread "main" javax.xml.stream.FactoryConfigurationError: Requested factory com.ctc.wstx.stax.WstxInputFactory cannot be located.  Classloader =sun.misc.Launcher$AppClassLoader@a39137
        at javax.xml.stream.FactoryLocator.loadFactory(FactoryLocator.java:120)
        at javax.xml.stream.FactoryLocator.locate(FactoryLocator.java:109)
        at javax.xml.stream.FactoryLocator.locate(FactoryLocator.java:54)
        at javax.xml.stream.XMLInputFactory.newInstance(XMLInputFactory.java:41)
        at org.apache.geronimo.system.plugin.PluginXmlUtil.<clinit>(PluginXmlUtil.java:62)

Thanks!