How to convert a chunks result to a two-dimensional array

[forkit via Digitalmars-d-learn]

I want int[][] like this -> [[1, 2, 3, 4, 5], [6, 7, 8, 9, 10], 
[11, 12, 13, 14, 15]]

Any help will be appreciated.
note: to2Darray is not a valid statement ;-)


// ---
module test;

import std;

void main()
{
    int[][] arrayOfarrays = iota(1, 16).chunks(5).to2Darray; // 
how to convert this into [][]
}
// ---