An IETF RFC 4646 language code or mul for multiple languages.

Constraints:

Allowed Values

ar, bg, ca, cs, da, de, el, en, es, eu, fa, fi, fr, ga, gl, hi, hu, hy, id, it, ja, ko, lv, mul, nl, no, pt, ro, ru, sv, th, tr, zh-Hans, zh-Hant

public string AnalysisSchemeLanguage { get; set; }