How to use the oauthenticator.azuread.AzureAdOAuthenticator function in oauthenticator

# app_log.info("Response %s", resp_json)
        access_token = resp_json['access_token']

        id_token = resp_json['id_token']
        decoded = jwt.decode(id_token, verify=False)

        userdict = {"name": decoded[self.username_claim]}
        userdict["auth_state"] = auth_state = {}
        auth_state['access_token'] = access_token
        # results in a decoded JWT for the user data
        auth_state['user'] = decoded

        return userdict


class LocalAzureAdOAuthenticator(LocalAuthenticator, AzureAdOAuthenticator):
    """A version that mixes in local system user creation"""
    pass

import os
from oauthenticator.azuread import AzureAdOAuthenticator
c.JupyterHub.authenticator_class = AzureAdOAuthenticator

c.Application.log_level = 'DEBUG'

c.AzureAdOAuthenticator.tenant_id = os.environ.get('AAD_TENANT_ID')

c.AzureAdOAuthenticator.oauth_callback_url = 'http://{your-domain}/hub/oauth_callback'
c.AzureAdOAuthenticator.client_id = '{AAD-APP-CLIENT-ID}'
c.AzureAdOAuthenticator.client_secret = '{AAD-APP-CLIENT-SECRET}'