private static IEnumerable <MockLanguage> ReadFromJson(IServiceProvider serviceProvider)
{
var optionsAccessor = serviceProvider
.GetRequiredService <IDataProviderOptions <IEnumerable <MockLanguage>, FileProviderOptions> >();
var file = new PhysicalFileProvider(AppContext.BaseDirectory).GetFileInfo(optionsAccessor.Value.Path);
return(JsonSerializer.DeserializeAsync <IEnumerable <MockLanguage> >(file.CreateReadStream()).Result);
}
