public String getLanguage() {
        return null;
    }
Get the ISO language code for this charset.

@return the language code, or <code>null</code> if the language cannot be determined.
tika-parsers/tika-parsers-standard/tika-parsers-standard-modules/tika-parser-text-module/src/main/java/org/apache/tika/parser/txt/CharsetRecognizer.java