How to take the Local Audio stream in react native demo app

we saw one function `getCurrentMeetingAudioStream()` in the documentation, but don't know how to implement it on react native,
could you please provide one example?
[https://aws.github.io/amazon-chime-sdk-js/classes/defaultaudiomixcontroller.html#getcurrentmeetingaudiostream](url)

we need audio stream for transcription
[https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-transcribe-streaming/](url)

Start with the linked DefaultAudioMixController getCurrentMeetingAudioStream documentation and the AWS Transcribe Streaming client documentation. Define an example for the React Native demo that obtains the local audio stream for transcription, and consider the work done when the example is documented or demonstrated clearly in the app.

Written by the indexing model from the issue text.