ImageMagick.ExifWriter.GetIndex C# (CSharp) Method

    private int GetIndex(Collection<int> indexes, ExifTag tag)
    {
      foreach (int index in indexes)
      {
        if (_Values[index].Tag == tag)
          return index;
      }

      int newIndex = _Values.Count;
      indexes.Add(newIndex);
      _Values.Add(ExifValue.Create(tag, null));
      return newIndex;
    }