/// <summary>
/// Creates a new BackupFileProvider that will persist over the program lifespan
/// </summary>
/// <returns>The newly created provider</returns>
public static BackupFileProvider CreateProvider()
{
if (instance != null)
{
throw new InvalidOperationException("There is already an existing BackupFileProvider");
}
instance = new BackupFileProvider();
instance.LoadFromFile();
return(instance);
}
