Hello Team,

I am currently facing an issue while attempting to map a nullable `List<>` into models. To elaborate, if I have a collection containing four records, where one record includes a List and the other three do not have this property in their respective records.

Upon trying to retrieve the data, I encounter the following error:

`System.Collections.Generic.KeyNotFoundException: Element 'SubjectURI' not found.`

I would appreciate your assistance in resolving this matter.

Thank you.