@java.lang.Override
  public boolean hasCustomerEncryptionKey() {
    return ((bitField0_ & 0x00000001) != 0);
  }
<pre>
Optional. Customer encryption key for boot disk.
</pre>

<code>
.google.cloud.tpu.v2alpha1.CustomerEncryptionKey customer_encryption_key = 1 [(.google.api.field_behavior) = OPTIONAL];
</code>

@return Whether the customerEncryptionKey field is set.
java-tpu/proto-google-cloud-tpu-v2alpha1/src/main/java/com/google/cloud/tpu/v2alpha1/BootDiskConfig.java