backend-common: additional api-report comments and tags

Signed-off-by: MT Lewis <mtlewis@users.noreply.github.com>

packages/backend-common/api-report.md

@@ -526,8 +526,6 @@ export type SearchResponseFile = {
   content(): Promise<Buffer>;
 };
 
-// Warning: (ae-missing-release-tag) "ServerTokenManager" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
-//
 // @public
 export class ServerTokenManager implements TokenManager {
   // (undocumented)
@@ -544,7 +542,6 @@ export class ServerTokenManager implements TokenManager {
 
 // @public (undocumented)
 export namespace ServerTokenManager {
-  // (undocumented)
   export class NoopTokenManager implements TokenManager {
     // (undocumented)
     authenticate(): Promise<void>;

packages/backend-common/src/tokens/ServerTokenManager.ts

@@ -71,7 +71,16 @@ export class ServerTokenManager implements TokenManager {
   }
 }
 
+/**
+ * @public
+ */
 export namespace ServerTokenManager {
+  /**
+   * Stub token manager which returns empty tokens and always
+   * authenticates successfully.
+   *
+   * @public
+   */
   export class NoopTokenManager implements TokenManager {
     async getToken() {
       return { token: '' };