public Builder clearType() {
      bitField0_ = (bitField0_ & ~0x00000002);
      type_ = null;
      if (typeBuilder_ != null) {
        typeBuilder_.dispose();
        typeBuilder_ = null;
      }
      onChanged();
      return this;
    }
<pre>
Input only. Immutable. The type of the payload.
</pre>

<code>
.google.cloud.visionai.v1.PacketType type = 2 [(.google.api.field_behavior) = INPUT_ONLY, (.google.api.field_behavior) = IMMUTABLE];
</code>
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/PacketHeader.java