public Builder clearHeader() {
      bitField0_ = (bitField0_ & ~0x00000001);
      header_ = null;
      if (headerBuilder_ != null) {
        headerBuilder_.dispose();
        headerBuilder_ = null;
      }
      onChanged();
      return this;
    }
<pre>
The packet header.
</pre>

<code>.google.cloud.visionai.v1.PacketHeader header = 1;</code>
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/Packet.java