public Builder mergeEndTimeOffset(com.google.protobuf.Duration value) {
      if (endTimeOffsetBuilder_ == null) {
        if (((bitField0_ & 0x00000004) != 0)
            && endTimeOffset_ != null
            && endTimeOffset_ != com.google.protobuf.Duration.getDefaultInstance()) {
          getEndTimeOffsetBuilder().mergeFrom(value);
        } else {
          endTimeOffset_ = value;
        }
      } else {
        endTimeOffsetBuilder_.mergeFrom(value);
      }
      if (endTimeOffset_ != null) {
        bitField0_ |= 0x00000004;
        onChanged();
      }
      return this;
    }
<pre>
Ad break end time in seconds relative to the start of the VOD asset.
</pre>

<code>.google.protobuf.Duration end_time_offset = 3;</code>
java-video-stitcher/proto-google-cloud-video-stitcher-v1/src/main/java/com/google/cloud/video/stitcher/v1/VodSessionAdBreak.java