How to get nested values without writing boilerplate code?

[vlytvyne]

Is there a way to avoid writing boilerplate nested classes to get deeply nested values? Having json object like this:

{
  name: {
    first: "Taras",
    last: "Shevchenko"
  }
  ...
}

To just get first name of the user I'm forced to create another class:

class User {
  final UserName name;
  ...
}

class UserName {
  final String first;
  final String last;
}

It would be great if It could be written with json pointer syntax like following:

class User {
  @JsonKey(name: "name/first")
  final UserName name;
   ...
}

[kevmoo]

Duplicate of #490