public com.google.cloud.speech.v2.CustomClass.ClassItem.Builder addItemsBuilder() {
      return getItemsFieldBuilder()
          .addBuilder(com.google.cloud.speech.v2.CustomClass.ClassItem.getDefaultInstance());
    }
<pre>
A collection of class items.
</pre>

<code>repeated .google.cloud.speech.v2.CustomClass.ClassItem items = 5;</code>
java-speech/proto-google-cloud-speech-v2/src/main/java/com/google/cloud/speech/v2/CustomClass.java