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

    size = 0;
    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(key_)) {
      size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, key_);
    }
    {
      int dataSize = 0;
      for (int i = 0; i < inputs_.size(); i++) {
        dataSize += computeStringSizeNoTag(inputs_.getRaw(i));
      }
      size += dataSize;
      size += 1 * getInputsList().size();
    }
    if (((bitField0_ & 0x00000001) != 0)) {
      size += com.google.protobuf.CodedOutputStream.computeMessageSize(3, getEndTimeOffset());
    }
    if (((bitField0_ & 0x00000002) != 0)) {
      size += com.google.protobuf.CodedOutputStream.computeMessageSize(4, getStartTimeOffset());
    }
    size += getUnknownFields().getSerializedSize();
    memoizedSize = size;
    return size;
  }
<pre>
Start time in seconds for the atom, relative to the input file timeline.
The default is `0s`.
</pre>

<code>.google.protobuf.Duration start_time_offset = 4;</code>
java-video-transcoder/proto-google-cloud-video-transcoder-v1/src/main/java/com/google/cloud/video/transcoder/v1/EditAtom.java