fix: resolve build and test errors

- Sar.Quantower.Tests.cs: add missing opening quote on string literal (line 48)
- Exports.cs: rename Correlation.Batch → Correl.Batch (CS0103)
- Ad.Validation.Tests.cs: fix Ooples OutputValues key "Ad" → "Adl"

lib/volume/ad/Ad.Quantower.cs

@@ -0,0 +1,48 @@
+using System.Drawing;
+using System.Runtime.CompilerServices;
+using TradingPlatform.BusinessLayer;
+
+namespace QuanTAlib;
+
+[SkipLocalsInit]
+public sealed class AdIndicator : Indicator, IWatchlistIndicator
+{
+    [InputParameter("Show cold values", sortIndex: 21)]
+    public bool ShowColdValues { get; set; } = true;
+
+    private Ad _ad = null!;
+    private readonly LineSeries _series;
+
+    public static int MinHistoryDepths => 0;
+    int IWatchlistIndicator.MinHistoryDepths => MinHistoryDepths;
+
+    public override string ShortName => "AD";
+    public override string SourceCodeLink => "https://github.com/mihakralj/QuanTAlib/blob/main/lib/volume/ad/Ad.Quantower.cs";
+
+    public AdIndicator()
+    {
+        OnBackGround = true;
+        SeparateWindow = true;
+        Name = "AD - Accumulation/Distribution Line";
+        Description = "Accumulation/Distribution Line";
+
+        _series = new LineSeries(name: "AD", color: Color.Blue, width: 2, style: LineStyle.Solid);
+        AddLineSeries(_series);
+    }
+
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    protected override void OnInit()
+    {
+        _ad = new Ad();
+        base.OnInit();
+    }
+
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    protected override void OnUpdate(UpdateArgs args)
+    {
+        TBar bar = this.GetInputBar(args);
+        TValue result = _ad.Update(bar, args.IsNewBar());
+
+        _series.SetValue(result.Value, _ad.IsHot, ShowColdValues);
+    }
+}