public com.google.protobuf.ByteString getPageTokenBytes() {
      java.lang.Object ref = pageToken_;
      if (ref instanceof String) {
        com.google.protobuf.ByteString b =
            com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
        pageToken_ = b;
        return b;
      } else {
        return (com.google.protobuf.ByteString) ref;
      }
    }
<pre>
Optional. A token identifying a page of results the server should return.
Typically, this is the value of [ListGlossariesResponse.next_page_token]
returned from the previous call to `ListGlossaries` method.
The first page is returned if `page_token`is empty or missing.
</pre>

<code>string page_token = 3 [(.google.api.field_behavior) = OPTIONAL];</code>

@return The bytes for pageToken.
java-translate/proto-google-cloud-translate-v3beta1/src/main/java/com/google/cloud/translate/v3beta1/ListGlossariesRequest.java