code: public Captions withCaptionFormats(CaptionFormat... captionFormats) {
          if (this.captionFormats == null) {
              setCaptionFormats(new com.amazonaws.internal.SdkInternalList<CaptionFormat>(captionFormats.length));
          }
          for (CaptionFormat ele : captionFormats) {
              this.captionFormats.add(ele);
          }
          return this;
      }
docs: <p>
  The array of file formats for the output captions. If you leave this value blank, Elastic Transcoder returns an
  error.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setCaptionFormats(java.util.Collection)} or {@link #withCaptionFormats(java.util.Collection)} if you want
  to override the existing values.
  </p>
  
  @param captionFormats
  The array of file formats for the output captions. If you leave this value blank, Elastic Transcoder
  returns an error.
  @return Returns a reference to this object so that method calls can be chained together.