Retrieves the DNS records required for configuring a custom domain for an application.
success if successful, error if not.error if not successful.UNAUTHORIZED: The user is not authenticated or lacks sufficient permissions.PLAN_RESTRICTED_FEATURE: The user’s plan does not support custom domains.APP_NOT_FOUND: The specified application does not exist or does not belong to the user.NO_CUSTOM_DOMAIN_SET: The application does not have a custom domain configured.