SecurityCenter().security_contacts list method is not working

• Package Name: azure-mgmt-security
• Package Version: 7.0.0
• Operating System: macOS 15.5 (24F74)
• Python Version: 3.12.8

Describe the bug
The security_contacts.list() method does not work out-of-the-box and throws a deserialization error. As described in issue #35996, this can be temporarily resolved by explicitly specifying api_version="2023-12-01-preview".

However, when using this API version, the alert_notifications attribute is always None, even though a direct get() call for the same contact (e.g., get("default")) returns the expected populated value.

Is this a known limitation of the preview API, or is something missing in how the list() call is returning objects?

To Reproduce
Steps to reproduce the behavior:

Testing script:

from azure.mgmt.security import SecurityCenter
from azure.identity import DefaultAzureCredential

credential = DefaultAzureCredential()
client = SecurityCenter(credential, "<subscription-id>")

# List using default API version (fails)
print("Testing list with default API version")
try:
    for contact in client.security_contacts.list():
        print(contact)
except Exception as e:
    print(f"Error: {e}")

# List using preview API version (works, but missing alert_notifications)
print("Testing list with 2023-12-01-preview API version")
for contact in client.security_contacts.list(api_version="2023-12-01-preview"):
    print(contact)
    print("alert_notifications:", contact.alert_notifications)

# Get using default API version (returns expected data)
print("Testing get with default API version")
print(client.security_contacts.get(security_contact_name="default").alert_notifications)

Script Output:

Testing list with default API version
Unable to deserialize to object: type
Testing list with 2023-12-01-preview API version
...
'alert_notifications': None
...
Testing get with default API version
<expected alert_notifications object>

Expected behavior
The list() method should return a fully populated SecurityContact object, including a non-null alert_notifications field—consistent with what is returned by get().

Commencez par le script de reproduction fourni et comparez les réponses de security_contacts.list() et get() avec les versions d’API par défaut et 2023-12-01-preview. Suivez la désérialisation et les champs renvoyés pour les deux appels ; le travail est terminé lorsque list() réussit et renvoie une valeur alert_notifications renseignée, cohérente avec get().