@Override
		public ListIterator<Bucket> iterator() {
			return new ReadOnlyListIterator<>(size(), this::get);
		}
Returns the bucket at the specified position.

@param index index of the element to return
@return the bucket at the specified position
@throws IndexOutOfBoundsException if the index is out of range
        ({@code index < 0 || index >= size()})
jenetics.incubator/src/main/java/io/jenetics/incubator/stat/Histogram.java