public Builder clearHtmlSource() {
      htmlSource_ = getDefaultInstance().getHtmlSource();
      bitField0_ = (bitField0_ & ~0x00000001);
      onChanged();
      return this;
    }
<pre>
The HTML to display for the ad resource.
</pre>

<code>string html_source = 1;</code>

@return This builder for chaining.
java-video-stitcher/proto-google-cloud-video-stitcher-v1/src/main/java/com/google/cloud/video/stitcher/v1/HtmlAdResource.java