public final int getNumber() {
      if (this == UNRECOGNIZED) {
        throw new java.lang.IllegalArgumentException(
            "Can't get the number of an unknown enum value.");
      }
      return value;
    }
<pre>
For scenarios where the synthesized audio is downloadable and can be
reused. For example, the synthesized audio is downloaded, stored in
customer service system and played repeatedly.
</pre>

<code>OFFLINE = 2;</code>
java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/java/com/google/cloud/texttospeech/v1beta1/CustomVoiceParams.java