pub struct ChunksArrayDecoder[T] {
    callback fn (t T) = unsafe { nil }
}

pub fn new_chunks_array_decoder[T](callback fn (t T)) &ChunksArrayDecoder[T] {
    return &ChunksArrayDecoder[T]{
        callback: callback
    }
}

struct Person {
    name string
    age  int
    kgs  f32
}

@[heap]
struct People {
mut:
    persons int
    kgs     f32
}

fn (mut people People) callback(person Person) {
    people.persons++
    people.kgs += person.kgs
}

fn module_callback(person Person) {
    println('person: ${person}')
}

fn test_main() {
    mut people := &People{}
    mut decoder := new_chunks_array_decoder[Person](people.callback)
    _ = decoder
}