code: func AzureADEndpoint(tenant string) oauth2.Endpoint {
  	if tenant == "" {
  		tenant = "common"
  	}
  	return oauth2.Endpoint{
  		AuthURL:  "https://login.microsoftonline.com/" + tenant + "/oauth2/v2.0/authorize",
  		TokenURL: "https://login.microsoftonline.com/" + tenant + "/oauth2/v2.0/token",
  	}
  }
docs: // AzureADEndpoint returns a new oauth2.Endpoint for the given tenant at Azure Active Directory.
  // If tenant is empty, it uses the tenant called `common`.
  //
  // For more information see:
  // https://docs.microsoft.com/en-us/azure/active-directory/develop/active-directory-v2-protocols#endpoints