Merging latest from master.

src/OpenTelemetry.Api/Trace/ActivityExtensions.cs

@@ -102,6 +102,7 @@ public static object GetTagValue(this Activity activity, string tagName)
         /// <param name="activity">Activity instance.</param>
         /// <param name="tagEnumerator">Tag enumerator.</param>
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        [System.Diagnostics.CodeAnalysis.SuppressMessage("Design", "CA1062:Validate arguments of public methods", Justification = "ActivityProcessor is hot path")]
         public static void EnumerateTags<T>(this Activity activity, ref T tagEnumerator)
             where T : struct, IActivityEnumerator<KeyValuePair<string, object>>
         {
@@ -133,6 +134,7 @@ public static void EnumerateLinks<T>(this Activity activity, ref T linkEnumerato
         /// <param name="activityLink">ActivityLink instance.</param>
         /// <param name="tagEnumerator">Tag enumerator.</param>
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        [System.Diagnostics.CodeAnalysis.SuppressMessage("Design", "CA1062:Validate arguments of public methods", Justification = "ActivityProcessor is hot path")]
         public static void EnumerateTags<T>(this ActivityLink activityLink, ref T tagEnumerator)
             where T : struct, IActivityEnumerator<KeyValuePair<string, object>>
         {
@@ -162,6 +164,7 @@ public static void EnumerateEvents<T>(this Activity activity, ref T eventEnumera
         /// <param name="activityEvent">ActivityEvent instance.</param>
         /// <param name="tagEnumerator">Tag enumerator.</param>
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        [System.Diagnostics.CodeAnalysis.SuppressMessage("Design", "CA1062:Validate arguments of public methods", Justification = "ActivityProcessor is hot path")]
         public static void EnumerateTags<T>(this ActivityEvent activityEvent, ref T tagEnumerator)
             where T : struct, IActivityEnumerator<KeyValuePair<string, object>>
         {