question: returns the full language name for an audio or subtitle track based on a translation from the iso 639 language code . if no code has been set , `` undetermined '' is returned . concode_field_sep int id concode_elem_sep String lang concode_elem_sep String UND concode_field_sep boolean matchCode concode_elem_sep String getLang concode_elem_sep void setId concode_elem_sep int getId concode_elem_sep void setLang
target: String function ( ) { if ( StringUtils . isNotBlank ( lang ) ) { return Iso639 . getLanguage ( lang ) ; } return Iso639 . getLanguage ( DLNAMediaLang . UND ) ; }