@param Iso639Language Specifies the supported language code format. If it is TRUE,\r
then Language and SupportedLanguages follow ISO 639-2 language code format.\r
Otherwise, they follow RFC 4646 language code format.\r
\r
@retval EFI_SUCCESS The Unicode string that matches the language specified by\r
Language was found in the table of Unicode strings UnicodeStringTable,\r
@param Iso639Language Specifies the supported language code format. If it is TRUE,\r
then Language and SupportedLanguages follow ISO 639-2 language code format.\r
Otherwise, they follow RFC 4646 language code format.\r
\r
@retval EFI_SUCCESS The Unicode string that matches the language specified by\r
Language was found in the table of Unicode strings UnicodeStringTable,\r