Issue/Help with "Update a layer 3 subinterface"

Documentation link

https://pan.dev/scm/api/config/ngfw/network/update-layer-3-subinterfaces-by-id/

Describe the problem

Updating a L3 Subinterface in a folder seems to be impossible. The name start with a "$" which seems to cause the error "INVALID_STRING_REGEX:
b'{"_errors":[{"code":"API_I00013","message":"Invalid Object. $ethernet1_3.16 '$ethernet1_3.16' is invalid","details":{"erro...valid","params":["$ethernet1_3.16"],"type":"INVALID_STRING_REGEX"}]}}],"_request_id":"19f437c6-2ed0-41ed-8143-00357a22e072"}\n'

Trying any other version of the name will cause the object not to be found anymore. So I am guessing that "$" needs to be allowed as a character.

Suggested fix

I am guessing that "$" needs to be allowed as a character.

Start with the linked Update Layer 3 Subinterfaces by ID endpoint documentation and reproduce the folder update using the reported "$ethernet1_3.16" name. Determine whether the endpoint rejects a valid subinterface identifier or whether the documentation is inaccurate; done means the behavior is corrected or the documented limitation and valid naming rules are clear.