public Builder mergeFrom(com.google.cloud.video.stitcher.v1.ProgressEvent other) {
      if (other == com.google.cloud.video.stitcher.v1.ProgressEvent.getDefaultInstance())
        return this;
      if (other.hasTimeOffset()) {
        mergeTimeOffset(other.getTimeOffset());
      }
      if (eventsBuilder_ == null) {
        if (!other.events_.isEmpty()) {
          if (events_.isEmpty()) {
            events_ = other.events_;
            bitField0_ = (bitField0_ & ~0x00000002);
          } else {
            ensureEventsIsMutable();
            events_.addAll(other.events_);
          }
          onChanged();
        }
      } else {
        if (!other.events_.isEmpty()) {
          if (eventsBuilder_.isEmpty()) {
            eventsBuilder_.dispose();
            eventsBuilder_ = null;
            events_ = other.events_;
            bitField0_ = (bitField0_ & ~0x00000002);
            eventsBuilder_ =
                com.google.protobuf.GeneratedMessageV3.alwaysUseFieldBuilders
                    ? getEventsFieldBuilder()
                    : null;
          } else {
            eventsBuilder_.addAllMessages(other.events_);
          }
        }
      }
      this.mergeUnknownFields(other.getUnknownFields());
      onChanged();
      return this;
    }
<pre>
Indicates a time in which a list of events should be triggered
during media playback.
</pre>

Protobuf type {@code google.cloud.video.stitcher.v1.ProgressEvent}
java-video-stitcher/proto-google-cloud-video-stitcher-v1/src/main/java/com/google/cloud/video/stitcher/v1/ProgressEvent.java