public boolean addAll(final int[] elements) {
		final int count = elements.length;
		ensureSize(_size + count);
		arraycopy(elements, 0, _data, _size, count);
		_size += count;

		return count != 0;
	}
Appends all of the elements in the specified array to the end of this
list.

@param elements array containing elements to be added to this list
@return {@code true} if this list changed as a result of the call
@throws NullPointerException if the specified array is null
jenetics.ext/src/main/java/io/jenetics/ext/internal/util/IntList.java