can not iterrate over non overworld chunks

[FDUTCH]

mcdb iterator wont iterate over non overworld chunks

code:

package main

import (
    "fmt"
    "github.com/df-mc/dragonfly/server/world"
    "github.com/df-mc/dragonfly/server/world/mcdb"
    "log"
    "os"
    "path/filepath"
)

func main() {
    wd, err := os.Getwd()
    if err != nil {
        panic(err)
    }

    db, err := mcdb.Config{}.Open(filepath.Join(wd, "world"))
    if err != nil {
        panic(err)
    }
    defer func(db *mcdb.DB) {
        _ = db.Close()
    }(db)


    iter := db.NewColumnIterator(&mcdb.IteratorRange{})
    defer iter.Release()

    for iter.Next() {
        pos := iter.Position()
        dim := iter.Dimension()
        //column := iter.Column()

        fmt.Printf("Loaded chunk at %v in dimension %v\n", pos, dim)
    }

    if err := iter.Error(); err != nil {
        log.Fatalf("error during chunk iteration: %v", err)
    }
}

output:

Loaded chunk at (0, 0) in dimension Overworld Loaded chunk at (0, 1) in dimension Overworld Loaded chunk at (0, 2) in dimension Overworld Loaded chunk at (0, 6) in dimension Overworld Loaded chunk at (0, -2) in dimension Overworld Loaded chunk at (0, -1) in dimension Overworld Loaded chunk at (1, 0) in dimension Overworld Loaded chunk at (1, 1) in dimension Overworld Loaded chunk at (1, 2) in dimension Overworld Loaded chunk at (1, -4) in dimension Overworld Loaded chunk at (1, -3) in dimension Overworld Loaded chunk at (1, -2) in dimension Overworld Loaded chunk at (1, -1) in dimension Overworld Loaded chunk at (2, 0) in dimension Overworld Loaded chunk at (2, 4) in dimension Overworld Loaded chunk at (2, -1) in dimension Overworld Loaded chunk at (3, 2) in dimension Overworld Loaded chunk at (3, 4) in dimension Overworld Loaded chunk at (4, 2) in dimension Overworld Loaded chunk at (4, 4) in dimension Overworld Loaded chunk at (-8, 4) in dimension Overworld Loaded chunk at (-6, 5) in dimension Overworld Loaded chunk at (-6, 6) in dimension Overworld Loaded chunk at (-6, -2) in dimension Overworld Loaded chunk at (-5, 0) in dimension Overworld Loaded chunk at (-5, 1) in dimension Overworld Loaded chunk at (-5, 2) in dimension Overworld Loaded chunk at (-5, 6) in dimension Overworld Loaded chunk at (-4, 0) in dimension Overworld Loaded chunk at (-4, 1) in dimension Overworld Loaded chunk at (-4, 2) in dimension Overworld Loaded chunk at (-4, 3) in dimension Overworld Loaded chunk at (-4, 4) in dimension Overworld Loaded chunk at (-3, 0) in dimension Overworld Loaded chunk at (-3, 1) in dimension Overworld Loaded chunk at (-3, 2) in dimension Overworld Loaded chunk at (-3, 3) in dimension Overworld Loaded chunk at (-3, 4) in dimension Overworld Loaded chunk at (-3, 6) in dimension Overworld Loaded chunk at (-3, 7) in dimension Overworld Loaded chunk at (-3, -4) in dimension Overworld Loaded chunk at (-3, -3) in dimension Overworld Loaded chunk at (-3, -1) in dimension Overworld Loaded chunk at (-2, 0) in dimension Overworld Loaded chunk at (-2, 1) in dimension Overworld Loaded chunk at (-2, 2) in dimension Overworld Loaded chunk at (-2, 4) in dimension Overworld Loaded chunk at (-2, 6) in dimension Overworld Loaded chunk at (-2, 7) in dimension Overworld Loaded chunk at (-2, -1) in dimension Overworld Loaded chunk at (-1, 0) in dimension Overworld Loaded chunk at (-1, 1) in dimension Overworld Loaded chunk at (-1, 2) in dimension Overworld Loaded chunk at (-1, 3) in dimension Overworld Loaded chunk at (-1, 6) in dimension Overworld Loaded chunk at (-1, -2) in dimension Overworld Loaded chunk at (-1, -1) in dimension Overworld