public java.lang.String getLanguageCode() {
    java.lang.Object ref = languageCode_;
    if (ref instanceof java.lang.String) {
      return (java.lang.String) ref;
    } else {
      com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
      java.lang.String s = bs.toStringUtf8();
      languageCode_ = s;
      return s;
    }
  }
public java . lang . String getLanguageCode ( ) { java . lang . Object ref = languageCode_ ; if ( ref instanceof java . lang . String ) { return ( java . lang . String ) ref ; } else { com . google . protobuf . ByteString bs = ( com . google . protobuf . ByteString ) ref ; java . lang . String s = bs . toStringUtf8 ( ) ; languageCode_ = s ; return s ; } }
<pre>
Optional. The language of training phrases, parameters and rich messages
defined in `intents`. If not specified, the agent's default language is
used. [Many
languages](https://cloud.google.com/dialogflow-enterprise/docs/reference/language)
are supported. Note: languages must be enabled in the agent before they can
be used.
</pre>

<code>string language_code = 4;</code>