question: converts an xmlgregoriancalendar to an instance of java.util.date concode_field_sep DatatypeFactory df concode_field_sep XMLGregorianCalendar asXMLGregorianCalendar
target: java . util . Date function ( XMLGregorianCalendar arg0 ) { if ( arg0 == null ) { return null ; } else { return arg0 . toGregorianCalendar ( ) . getTime ( ) ; } }