question: public static String constructUserKey ( String lang , String country , Map < String , String > hyphPatNames ) { String userKey = null ; if ( hyphPatNames != null ) { String key = constructLlccKey ( lang , country ) ; key = key . replace ( '_' , '-' ) ; userKey = hyphPatNames . get ( key ) ; } return userKey ; }
target:  If the user configured a hyphenation pattern file name for this (lang,country) value, return it. If not, return null.