Where can I find the documentation for the new Google V1 PHP API Patch method

I'm looking for the documentation for patch method of the PHP client for the new Google V1 API for MyBusinessBusinessInformation. I can easily find the HTTP documentation at https://developers.google.com/my-business/reference/businessinformation/rest/v1/locations/patch

I have no problem using $locations->listAccountsLocations to get the list of locations, but cannot find the patch method to update these.

source https://stackoverflow.com/questions/73613321/where-can-i-find-the-documentation-for-the-new-google-v1-php-api-patch-method