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>
X-SAMPA (e.g. apple -&gt; "{p&#64;l" )
https://en.wikipedia.org/wiki/X-SAMPA
</pre>

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