@java.lang.Override
  public final boolean isInitialized() {
    byte isInitialized = memoizedIsInitialized;
    if (isInitialized == 1) return true;
    if (isInitialized == 0) return false;

    memoizedIsInitialized = 1;
    return true;
  }
<pre>
A device-specific ID. The ID must be a unique identifier that
distinguishes the device from other devices.
</pre>

<code>string id = 2;</code>

@return The bytes for id.
java-talent/proto-google-cloud-talent-v4beta1/src/main/java/com/google/cloud/talent/v4beta1/DeviceInfo.java