public Builder clearDuration() {
      bitField0_ = (bitField0_ & ~0x00000010);
      duration_ = null;
      if (durationBuilder_ != null) {
        durationBuilder_.dispose();
        durationBuilder_ = null;
      }
      onChanged();
      return this;
    }
<pre>
Duration of the frame.
</pre>

<code>.google.protobuf.Duration duration = 5;</code>
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/GstreamerBufferDescriptor.java