FileStats.cs

public class FileStats
{
  public FileStats(int additions, int subtractions, string filename)
  {
    Additions = additions;
    Subtractions = subtractions;
    Filename = filename;
  }

  public int Additions { get; private set; }
  public int Subtractions { get; private set; }
  public string Filename { get; private set; }
}