Configuring Graph Requests and using Response Getters

Hi much of the PHP SDK documentation refers to HTTP requests like
https://graph.microsoft.com/v1.0/me/drive/root/children

However when I try to translate this to a Graph query
$result = $graphServiceClient->users()->byUserId("my-user-id")->drive()->root()->children()->get()->wait();

or
$result = $graphServiceClient->users()->byUserId("my-user-id")->drive()->root()->children()->post()->wait();
The SDK tells me root() and children() are not part of the drive request builder.

Is there documentation that shows how to translate HTTP examples like "https://graph.microsoft.com/v1.0/me/drive/root/children" into their PHP equivalent? Or, even better, documentation that shows each of the endpoints for PHP SDK?

Lastly does the PHP SDK, provide a response getter and/or getter for every data field returned from the server? Again, the documentation gives HTTP request examples with JSON response examples,

{
     "@odata.context": "https://graph.microsoft.com/v1.0/$metadata#drives/$entity",
     "@microsoft.graph.tips": "Use $select to choose only the properties your app needs, as this can lead to performance improvements. For example: GET me/drive?$select=driveType,owner",
     "createdDateTime": "2023-10-22T00:11:21Z",
     "description": "",
     "id": "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX",
     "lastModifiedDateTime": "2024-06-27T10:39:41Z",
     "name": "OneDrive",
     "webUrl": "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX/Documents",
     "driveType": "business",
     "createdBy": {
         "user": {
             "displayName": "System Account"
         }
     },
     "lastModifiedBy": {
         "user": {
             "email": "Martin@jobcop.co.uk",
             "id": "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX",
             "displayName": "Martin Thorburn"
         }
     },
     "owner": {
         "user": {
             "email": "Martin@jobcop.co.uk",
             "id": "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX",
             "displayName": "Martin Thorburn"
         }
     },
     "quota": {
         "deleted": 1030849340,
         "remaining": 1097450601323,
         "state": "normal",
         "total": 1099511627776,
         "used": 1030177113
     }
 }

however, if I use a query like:
$result = $graphServiceClient->drives()->byDriveId('my-drive-id')->get()->wait();

I do not seem to get anything like the documentated json response. Indeed if I use
print_r($result);

all I get is a huge, unformatted object !!

Is there a reponse getter, i.e.
$result->getResponse();

or
$result->getbody();

How would I even try to read the response, or even know what getters to use to access the retuted data ?

I woould really appreciate some help and guidance on this?

Comienza revisando los ejemplos de request-builder del PHP SDK para los endpoints /me/drive/root/children y /drives/{id}, junto con la documentación de los objetos de respuesta. Documenta cómo se asignan las rutas de los endpoints HTTP a las llamadas PHP y cómo inspeccionar los campos devueltos y los datos anidados. Se considera completado cuando la guía cubra tanto la traducción de requests como el acceso a las respuestas, con ejemplos que coincidan con las consultas reportadas.