@java.lang.Override
  public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
    for (int i = 0; i < publicBlueprints_.size(); i++) {
      output.writeMessage(1, publicBlueprints_.get(i));
    }
    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(nextPageToken_)) {
      com.google.protobuf.GeneratedMessageV3.writeString(output, 2, nextPageToken_);
    }
    getUnknownFields().writeTo(output);
  }
<pre>
Output only. A token identifying a page of results the server should
return.
</pre>

<code>string next_page_token = 2 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>

@return The bytes for nextPageToken.
java-telcoautomation/proto-google-cloud-telcoautomation-v1/src/main/java/com/google/cloud/telcoautomation/v1/ListPublicBlueprintsResponse.java