'How to parse JSON from Azure App Configuration into an strongly typed object

I'm trying to parse JSON from Azure App Configuration into my Azure function but I get null. Am I doing something wrong?

The Key is "Site" and Value is

{
  "SiteUrl": "url",
  "TitleXpath": "xpath"
}

Here is the class I'm trying to parse JSON into:

public class SiteData
{
    public string SiteUrl { get; set; }

    public string TitleXpath { get; set; }
}

In my Azure Function, I get null as a result when I'm trying to parse it into a SiteData obj.

var site = _configuration.GetValue<SiteData>("Site");

However this works:

var site = _configuration.GetValue<string>("Site");

Solution 1:^[1]

I managed to solve this problem by:

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Solution	Source
Solution 1	konkri