/// <summary>
/// Can be overridden to populate additional fields of a subclass
/// </summary>
/// <param name="i"></param>
protected virtual void PopulateCustomProperties(FileFolderInstance i)
{
// default case is nothing
}
/// <summary>
/// Can be overridden to create instances of alternate subclasses
/// </summary>
protected virtual FileFolderInstance CreateInstance()
{
FileFolderInstance i = new FileFolderInstance();
return i;
}