Hey,

I don't know if this is a bug, or a misunderstanding from me, but I have been struggling with this.

Bug

When creating a secret for an Azure AD app using add_password.post() and a PasswordCredential object, fields such as displayName, startDateTime, and endDateTime are silently ignored. The resulting secret is created with an empty name and a default expiration of 2 years.

Steps to reproduce

from msgraph.generated.models import PasswordCredential

now = datetime.datetime.now(datetime.timezone.utc)
end = now + datetime.timedelta(days=365)

cred = PasswordCredential(
    display_name="Secret Test 2025",
    start_date_time=now,
    end_date_time=end
)

await client.applications.by_application_id(app_id).add_password.post(cred)

Expected behavior

• Secret is created with displayName "Secret Test 2025"
• Secret expires on the specified endDateTime

Actual behavior

• Secret is created with no name
• Secret expires 2 years from creation (default)

SDK version: msgraph-sdk-python v1.26.0
Python version: 3.12.9