public IntStreamEx append(IntStream other){
  return new IntStreamEx(IntStream.concat(stream(),other),context.combine(other));
}

public IntStreamEx append ( IntStream other ) { return new IntStreamEx ( IntStream . concat ( stream ( ) , other ) , context . combine ( other ) ) ; }
creates a lazily concatenated stream whose elements are all the elements of this stream followed by all the elements of the other stream . the resulting stream is ordered if both of the input streams are ordered , and parallel if either of the input streams is parallel . when the resulting stream is closed , the close handlers for both input streams are invoked .
