@java.lang.Override
    public Builder toBuilder() {
      return this == DEFAULT_INSTANCE ? new Builder() : new Builder().mergeFrom(this);
    }
<pre>
The time to start displaying the overlay object, in seconds. Default: 0
</pre>

<code>.google.protobuf.Duration start_time_offset = 2;</code>
java-video-transcoder/proto-google-cloud-video-transcoder-v1/src/main/java/com/google/cloud/video/transcoder/v1/Overlay.java