docs: @Pure
  	public int[] toIntArray() {
  		final int[] tab = new int[this.size];
  		if (this.values != null) {
  			int idxTab = 0;
  			for (int idxStart = 0; idxStart < this.values.length - 1; idxStart += 2) {
  				for (int n = this.values[idxStart]; n <= this.values[idxStart + 1]; ++n) {
  					tab[idxTab++] = n;
  				}
  			}
  		}
  		return tab;
  	}