public Builder clearShieldedInstanceConfig() {
      bitField0_ = (bitField0_ & ~0x00800000);
      shieldedInstanceConfig_ = null;
      if (shieldedInstanceConfigBuilder_ != null) {
        shieldedInstanceConfigBuilder_.dispose();
        shieldedInstanceConfigBuilder_ = null;
      }
      onChanged();
      return this;
    }
<pre>
Shielded Instance options.
</pre>

<code>.google.cloud.tpu.v2alpha1.ShieldedInstanceConfig shielded_instance_config = 45;</code>
java-tpu/proto-google-cloud-tpu-v2alpha1/src/main/java/com/google/cloud/tpu/v2alpha1/Node.java