As addition to other answers, @JsonProperty annotation is absolutely important if you use the @JsonCreator annotation in lessons which would not have a no-arg constructor. I rapidly learned, of course, this doens't operate: Python by no means binds the callable to the object and I would like the object so https://navrajinfratechgurgaon.blogspot.com/2025/05/signature-global-farukhnagar-rising.html