Imported Upstream version 4.0.0~alpha1

Former-commit-id: 806294f5ded97629b74c85c09952f2a74fe182d9

external/referencesource/System/sys/system/Diagnostics/CodeAnalysis/ExcludeFromCodeCoverageAttribute.cs

@@ -0,0 +1,21 @@
+using System;
+
+namespace System.Diagnostics.CodeAnalysis
+{
+    /// <summary>
+    /// Specifies that the attributed code should be excluded from code coverage
+    /// collection.  Placing this attribute on a class/struct excludes all
+    /// enclosed methods and properties from code coverage collection.
+    /// </summary>
+    [AttributeUsage(
+        AttributeTargets.Class | AttributeTargets.Struct | AttributeTargets.Constructor | AttributeTargets.Method | AttributeTargets.Property | AttributeTargets.Event,
+        Inherited = false,
+        AllowMultiple = false
+    )]
+    public sealed class ExcludeFromCodeCoverageAttribute : Attribute
+    {
+        public ExcludeFromCodeCoverageAttribute()
+        {
+        }
+    }
+}