[MetricsAdvisor] Made MetricFeedback class abstract

sdk/metricsadvisor/Azure.AI.MetricsAdvisor/api/Azure.AI.MetricsAdvisor.netstandard2.0.cs

@@ -1005,7 +1005,7 @@ internal MetricEnrichedSeriesData() { }
         public System.Collections.Generic.IReadOnlyList<double?> UpperBoundaries { get { throw null; } }
         public System.Collections.Generic.IReadOnlyList<double> Values { get { throw null; } }
     }
-    public partial class MetricFeedback
+    public abstract partial class MetricFeedback
     {
         internal MetricFeedback() { }
         public System.DateTimeOffset? CreatedTime { get { throw null; } }

sdk/metricsadvisor/Azure.AI.MetricsAdvisor/src/Models/MetricFeedback/MetricFeedback.cs

@@ -2,14 +2,15 @@
 // Licensed under the MIT License.
 
 using System;
+using System.Text.Json;
 using Azure.Core;
 
 namespace Azure.AI.MetricsAdvisor.Models
 {
     /// <summary> <see cref="MetricFeedback"/>s are used to describe feedback on unsatisfactory anomaly detection results.
     /// When feedback is created for a given metric, it is applied to future anomaly detection processing of the same series.
     /// The processed points will not be re-calculated. </summary>
-    public partial class MetricFeedback
+    public abstract partial class MetricFeedback : IUtf8JsonSerializable
     {
         /// <summary> Initializes a new instance of the <see cref="MetricFeedback"/> class. </summary>
         /// <param name="metricId"> The metric unique Id. </param>
@@ -43,5 +44,31 @@ internal MetricFeedback(string metricId, FeedbackDimensionFilter dimensionFilter
 
         /// <summary> The dimension filter. </summary>
         public FeedbackDimensionFilter DimensionFilter { get; internal set; }
+
+        internal static MetricFeedback DeserializeMetricFeedback(JsonElement element)
+        {
+            if (element.TryGetProperty("feedbackType", out JsonElement discriminator))
+            {
+                var discriminatorString = discriminator.GetString();
+
+                switch (discriminatorString)
+                {
+                    case "Anomaly":
+                        return MetricAnomalyFeedback.DeserializeMetricAnomalyFeedback(element);
+                    case "ChangePoint":
+                        return MetricChangePointFeedback.DeserializeMetricChangePointFeedback(element);
+                    case "Comment":
+                        return MetricCommentFeedback.DeserializeMetricCommentFeedback(element);
+                    case "Period":
+                        return MetricPeriodFeedback.DeserializeMetricPeriodFeedback(element);
+                    default:
+                        throw new ArgumentException($"Unknown feedback type returned by the service: {discriminatorString}");
+                }
+            }
+            else
+            {
+                throw new ArgumentException("The feedback type was not returned by the service");
+            }
+        }
     }
 }