@java.lang.Override
  public int getSsmlGenderValue() {
    return ssmlGender_;
  }
<pre>
The preferred gender of the voice. If not set, the service will
choose a voice based on the other parameters such as language_code and
name. Note that this is only a preference, not requirement; if a
voice of the appropriate gender is not available, the synthesizer should
substitute a voice with a different gender rather than failing the request.
</pre>

<code>.google.cloud.texttospeech.v1beta1.SsmlVoiceGender ssml_gender = 3;</code>

@return The enum numeric value on the wire for ssmlGender.
java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/java/com/google/cloud/texttospeech/v1beta1/VoiceSelectionParams.java