✅ why I can't access JsonPropertyInfo.AssociatedParameter?
The property does exist both in the MS docs: https://learn.microsoft.com/pt-br/dotnet/api/system.text.json.serialization.metadata.jsonpropertyinfo.associatedparameter?view=net-8.0
and source code: https://source.dot.net/#System.Text.Json/System/Text/Json/Serialization/Metadata/JsonPropertyInfo.cs,252b641dc1889f6b
and source code: https://source.dot.net/#System.Text.Json/System/Text/Json/Serialization/Metadata/JsonPropertyInfo.cs,252b641dc1889f6b

Obtém o parâmetro de construtor associado à propriedade atual.
