import crafttweaker.item.IItemStack;

val map1 = {
    <minecraft:gravel> : "hello world"
} as string[IItemStack];

val map2 as string[IItemStack] = {};

/*
for a, b in map1 {
    map2[a] = b;
}
*/

for a, b in map1 {
    print("a: " ~ a);
    print("b: " ~ b);
    map2[a] = b;
}

/*
map2[<minecraft:gravel>] = "hello world";
print(map2[<minecraft:gravel>]);
*/