Question: How do I construct the delta research query ?

This library looks like lacking many more examples of less simplistic queries using graph api for Python .

I am trying to understand how I can delta sync the data using DeltaRequestBuilder that is advocated so much in the documentation, but after installing this package I cannot even find how to import this module from msgraph.
I know I can use another library msgraph-core but it is not ideal either and most examples in Microsoft docs exemplify this library. They do not, however, direct to some comprehensive documentation (or I did not find this).
Beyond that, for my pipeline I need to know how do I rewrite the following HTTP call in the modules of this library:
f"/users/{user_principal_name}/drive/root:/{FolderName}:/children".

Thanks in advance for any response.

Start by locating the package's documented or exported support for DeltaRequestBuilder and the msgraph import path, then compare it with the referenced Microsoft examples and msgraph-core. Trace the modules involved in the /users/{user_principal_name}/drive/root:/{FolderName}:/children request. Done means the documentation explains delta queries, imports, and the equivalent library entry points with working examples.