public Builder addAllCustomClasses(
        java.lang.Iterable<? extends com.google.cloud.speech.v1.CustomClass> values) {
      if (customClassesBuilder_ == null) {
        ensureCustomClassesIsMutable();
        com.google.protobuf.AbstractMessageLite.Builder.addAll(values, customClasses_);
        onChanged();
      } else {
        customClassesBuilder_.addAllMessages(values);
      }
      return this;
    }
<pre>
The custom classes.
</pre>

<code>repeated .google.cloud.speech.v1.CustomClass custom_classes = 1;</code>
java-speech/proto-google-cloud-speech-v1/src/main/java/com/google/cloud/speech/v1/ListCustomClassesResponse.java