/// <summary>
/// Try to load fai item setting from disk if any
/// </summary>
/// <returns>The loaded fai items</returns>
private IEnumerable <FaiItem> LoadFaiItemsFromDisk()
{
var itemNames = MeasurementUnit.GenFaiItemValues("").Select(item => item.Name);
return(AutoSerializableHelper.LoadAutoSerializables <FaiItem>(itemNames, FaiItemSerializationDir));
}