Exchanges the current turn's credentials for an access token.
The current turn context.
Name of the configured auth handler to use.
Token-exchange options, including the requested scopes.
The exchanged token, or undefined when no token is available.
Minimal authorization shape required by AgenticTokenCache.
Mirrors the
Authorizationinterface from@microsoft/agents-hostingso the cache can be used without a direct dependency on that package.