code: public void setHtml5Features(com.google.api.ads.admanager.axis.v201902.Html5Feature[] html5Features) {
          this.html5Features = html5Features;
      }
docs: Sets the html5Features value for this SwiffyFallbackAsset.
  
  @param html5Features   * A list of {@link Html5Feature HTML5 features} required to play
  this Swiffy fallback
  asset correctly.