private com.google.protobuf.SingleFieldBuilderV3<
            com.google.protobuf.Timestamp,
            com.google.protobuf.Timestamp.Builder,
            com.google.protobuf.TimestampOrBuilder>
        getDtsTimeFieldBuilder() {
      if (dtsTimeBuilder_ == null) {
        dtsTimeBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.protobuf.Timestamp,
                com.google.protobuf.Timestamp.Builder,
                com.google.protobuf.TimestampOrBuilder>(
                getDtsTime(), getParentForChildren(), isClean());
        dtsTime_ = null;
      }
      return dtsTimeBuilder_;
    }
<pre>
DTS of the frame.
</pre>

<code>.google.protobuf.Timestamp dts_time = 4;</code>
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/GstreamerBufferDescriptor.java