private void ensureEventsIsMutable() {
      if (!((bitField0_ & 0x00000002) != 0)) {
        events_ = new java.util.ArrayList<com.google.cloud.video.stitcher.v1.Event>(events_);
        bitField0_ |= 0x00000002;
      }
    }
<pre>
The time when the following tracking events occurs. The time is in
seconds relative to the start of the VOD asset.
</pre>

<code>.google.protobuf.Duration time_offset = 1;</code>
java-video-stitcher/proto-google-cloud-video-stitcher-v1/src/main/java/com/google/cloud/video/stitcher/v1/ProgressEvent.java