Add example of a nested namespace to api-extractor-lib1-test

Author: octogonz

build-tests/api-extractor-lib1-test/etc/api-extractor-lib1-test.api.md

@@ -18,5 +18,18 @@ export class Lib1Class extends Lib1ForgottenExport {
 export interface Lib1Interface {
 }
 
+// @public (undocumented)
+export namespace Lib1Namespace {
+    // (undocumented)
+    export namespace Inner {
+        // (undocumented)
+        export class X {
+        }
+    }
+    // (undocumented)
+    export class Y {
+    }
+}
+
 
 ```

build-tests/api-extractor-lib1-test/src/Lib1Namespace.ts

@@ -0,0 +1,10 @@
+// Copyright (c) Microsoft Corporation. All rights reserved. Licensed under the MIT license.
+// See LICENSE in the project root for license information.
+
+/** @public */
+export namespace Lib1Namespace {
+  export namespace Inner {
+    export class X {}
+  }
+  export class Y {}
+}

build-tests/api-extractor-lib1-test/src/index.ts

@@ -26,3 +26,5 @@ export class Lib1Class extends Lib1ForgottenExport {
 
 /** @alpha */
 export interface Lib1Interface {}
+
+export { Lib1Namespace } from './Lib1Namespace';