private CultureInfo GetClosestMatchingLanguage(CultureInfo culture)
{
if(culture == null || culture.Equals(CultureInfo.InvariantCulture)) {
return null;
}
var cultures = _cultureProvider.GetSupportedCultures.ToList();
var specificCulture = cultures.FirstOrDefault(c => c.IsSameCultureAs(culture));
var neutralCulture = cultures.FirstOrDefault(c => c.IsSameLanguageAs(culture));
var fallBackCulture = culture.IsSameLanguageAs(FallbackCulture) ? FallbackCulture : null;
return specificCulture ?? neutralCulture ?? fallBackCulture;
}