question: public Object newInstance ( Class javaContentInterface ) throws JAXBException { if ( javaContentInterface == null ) { throw new JAXBException ( Messages . format ( Messages . CI_NOT_NULL ) ) ; } try { Class c = gi . getDefaultImplementation ( javaContentInterface ) ; if ( c == null ) throw new JAXBException ( Messages . format ( Messages . MISSING_INTERFACE , javaContentInterface ) ) ; return c . newInstance ( ) ; } catch ( Exception e ) { throw new JAXBException ( e ) ; } }
target:  Create an instance of the specified Java content interface.  