DSL for defining interfaces

[jeggy]

It would be nice to be able to define interface properties that are not actually part of the Kotlin interface.

Idea being something like this:

interface MyInterface
data class MyDataClass(val id: Int): MyInterface
...
interface<MyInterface> {
  property<String>("field1") // No default implementation and will run into runtime schema creation error if not implement in all types that implement this interface
  property<String>("field2") { // This property has a default implementation, but can be overwritten within implemented types
    resolver { a: MyInterface ->
      "FIELD-2"
    }
  }
}
type<MyDataClass> {
  property<String>("field1") {
    resolver { data: MyDataClass ->
      "FIELD-${data.id}"
    }
  }
}