Restores content for InternalsVisibleTo item

Author: Mikejo5000

docs/msbuild/common-msbuild-project-items.md

@@ -2,7 +2,7 @@
 title: Common MSBuild Project Items | Microsoft Docs
 description: Learn about common MSBuild project items. Items are named references to one or more files, and have metadata like file names, paths, and version numbers.
 ms.custom: SEO-VS-2020
-ms.date: 11/04/2016
+ms.date: 10/29/2020
 ms.topic: reference
 dev_langs:
 - VB
@@ -156,6 +156,18 @@ Represents assembly attributes to be generated as `[AssemblyMetadata(key, value)
 > [!NOTE]
 > This applies to projects using the .NET Core SDK only.
 
+### InternalsVisibleTo
+
+Specifies assemblies to be emitted as `[InternalsVisibleTo(..)]` assembly attributes.
+
+| Item metadata name | Description |
+|-----------------------| - |
+| Include | The assembly name. |
+| Key | Optional string. The public key of the assembly. |
+
+> [!NOTE]
+> This applies to SDK-style projects only.
+
 ### BaseApplicationManifest
 
 Represents the base application manifest for the build, and contains ClickOnce deployment security information.