question: private String detailBase ( final Method method ) { final Class < ? > clazz = method . getDeclaringClass ( ) ; final String detailBase = MessageUtils . bundleNameForClass ( clazz ) ; if ( isBlank ( detailBase ) ) { throw new IllegalStateException ( "no bundle name defined for " + clazz ) ; } return detailBase ; }
target:  Get the name of the message bundle to use when getting the message for the specified method