public Builder clearPtsTime() {
      bitField0_ = (bitField0_ & ~0x00000004);
      ptsTime_ = null;
      if (ptsTimeBuilder_ != null) {
        ptsTimeBuilder_.dispose();
        ptsTimeBuilder_ = null;
      }
      onChanged();
      return this;
    }
<pre>
PTS of the frame.
</pre>

<code>.google.protobuf.Timestamp pts_time = 3;</code>
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/GstreamerBufferDescriptor.java