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

      size = 0;
      if (totalTokenCount_ != 0) {
        size += com.google.protobuf.CodedOutputStream.computeInt32Size(1, totalTokenCount_);
      }
      if (textCount_ != 0) {
        size += com.google.protobuf.CodedOutputStream.computeInt32Size(2, textCount_);
      }
      if (imageCount_ != 0) {
        size += com.google.protobuf.CodedOutputStream.computeInt32Size(3, imageCount_);
      }
      if (videoDurationSeconds_ != 0) {
        size += com.google.protobuf.CodedOutputStream.computeInt32Size(4, videoDurationSeconds_);
      }
      if (audioDurationSeconds_ != 0) {
        size += com.google.protobuf.CodedOutputStream.computeInt32Size(5, audioDurationSeconds_);
      }
      size += getUnknownFields().getSerializedSize();
      memoizedSize = size;
      return size;
    }
<pre>
Duration of audio in seconds.
</pre>

<code>int32 audio_duration_seconds = 5;</code>

@return The audioDurationSeconds.
java-vertexai/proto-google-cloud-vertexai-v1/src/main/java/com/google/cloud/vertexai/api/CachedContent.java