/// <summary>
/// Save data settings to the file
/// </summary>
/// <param name="settings">Data settings</param>
/// <param name="fileProvider">File provider</param>
public static void SaveSettings(DataSettings settings, IResearchFileProvider fileProvider = null)
{
Singleton <DataSettings> .Instance = settings ?? throw new ArgumentNullException(nameof(settings));
fileProvider = fileProvider ?? CommonHelper.DefaultFileProvider;
var filePath = fileProvider.MapPath(ResearchDataSettingsDefaults.FilePath);
//create file if not exists
fileProvider.CreateFile(filePath);
//save data settings to the file
var text = JsonConvert.SerializeObject(Singleton <DataSettings> .Instance, Formatting.Indented);
fileProvider.WriteAllText(filePath, text, Encoding.UTF8);
}