code: public JobAlbumArt withArtwork(Artwork... artwork) {
          if (this.artwork == null) {
              setArtwork(new com.amazonaws.internal.SdkInternalList<Artwork>(artwork.length));
          }
          for (Artwork ele : artwork) {
              this.artwork.add(ele);
          }
          return this;
      }
docs: <p>
  The file to be used as album art. There can be multiple artworks associated with an audio file, to a maximum of
  20. Valid formats are <code>.jpg</code> and <code>.png</code>
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setArtwork(java.util.Collection)} or {@link #withArtwork(java.util.Collection)} if you want to override
  the existing values.
  </p>
  
  @param artwork
  The file to be used as album art. There can be multiple artworks associated with an audio file, to a
  maximum of 20. Valid formats are <code>.jpg</code> and <code>.png</code>
  @return Returns a reference to this object so that method calls can be chained together.