@java.lang.Override
  public int getSerializedSize() {
    int size = memoizedSize;
    if (size != -1) return size;

    size = 0;
    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(htmlSource_)) {
      size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, htmlSource_);
    }
    size += getUnknownFields().getSerializedSize();
    memoizedSize = size;
    return size;
  }
<pre>
The HTML to display for the ad resource.
</pre>

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

@return The bytes for htmlSource.
java-video-stitcher/proto-google-cloud-video-stitcher-v1/src/main/java/com/google/cloud/video/stitcher/v1/HtmlAdResource.java