code: public Array<T> append(final Array<T> array) {
  		final Array<T> appended = newInstance(length() + array.length());
  		for (int i = 0; i < _length; ++i) {
  			appended.set(i, get(i));
  		}
  		for (int i = 0; i < array._length; ++i) {
  			appended.set(i + _length, array.get(i));
  		}
  
  		return appended;
  	}
docs: Return a <i>new</i> {@code Array} object with the given values appended.
  
  @since 3.4
  
  @param array the values to append
  @return a <i>new</i> {@code Array} object with the elements of
  {@code this} array and the given {@code array} appended.
  @throws NullPointerException if the given {@code array} is {@code null}