Missing property `tokenProvider` on management client

Checklist

[X] I have looked into the Readme, Examples, and FAQ and have not found a suitable solution or answer.
[X] I have looked into the API documentation and have not found a suitable solution or answer.
[X] I have searched the issues and have not found a suitable solution or answer.
[X] I have searched the Auth0 Community forums and have not found a suitable solution or answer.
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Description

The migration guide to v4 includes an entry that getAccessToken has been renamed to tokenProvider.getAccessToken but the client does not expose the tokenProvider as a property and the exports from the top-level of the package do not export the TokenProvider class, so instantiating it directly is not clear. The migration guide makes it seem like this should expose tokenProvider as a property of the client, like actions, emails, etc.

The use case for us is we use machine tokens in our backend tasks to authenticate across our microservices.

// v3
const mgmtClient = new ManagementClient({
    clientId,
    clientSecret,
    domain,
    audience,
    tokenProvider: {
        enableCache: true
    }
});

const token = await mgmtClient.getAccessToken();

const response = await fetch(url, { 
   headers: {
      Authorization: `Bearer ${token`}
   }
});

Reproduction

import { ManagementClient } from "auth0";

const mgmtClient = new ManagementClient({
    domain,
    clientId,
    clientSecret,
    audience
});

const token = await mgmtClient.tokenProvider.getAccessToken(); // mgmtClient does not have property tokenProvider

import { TokenProvider } from "auth0"; // not exported

auth0 / node-auth0