public com.google.cloud.speech.v2.CustomClass.Builder getCustomClassBuilder() {
      bitField0_ |= 0x00000001;
      onChanged();
      return getCustomClassFieldBuilder().getBuilder();
    }
<pre>
Required. The CustomClass to create.
</pre>

<code>
.google.cloud.speech.v2.CustomClass custom_class = 1 [(.google.api.field_behavior) = REQUIRED];
</code>
java-speech/proto-google-cloud-speech-v2/src/main/java/com/google/cloud/speech/v2/CreateCustomClassRequest.java