ddTokenToHeartbeatResponse($response) {
    $response['mailpoet_token'] = $this->wp->wpCreateNonce('mailpoet_token');
    return $response;
  }

  public function addEndpointNamespace($namespace, $version) {
    if (!empty($this->endpointNamespaces[$version][$namespace])) return;
    $this->endpointNamespaces[$version][] = $namespace;
  }

  public function getEndpointNamespaces() {
    return $this->endpointNamespaces;
  }

  public function getRequestedEndpointClass() {
    return $this->requestEndpointClass;
  }

  public function getRequestedAPIVersion() {
    return $this->requestApiVersion;
  }

  public function createErrorResponse($errorType, $errorMessage, $responseStatus) {
    $errorMessages = [
      $errorType => $errorMessage,
    ];

    if ($errorType === Error::BAD_REQUEST) {
      $mpReinstallErrorMessage = __('The plugin has encountered an unexpected error. Please reload the page. If that does not help, [link]re-install the MailPoet Plugin.[/link]', 'mailpoet');
      $mpReinstallErrorMessage = Helpers::replaceLinkTags(
        $mpReinstallErrorMessage,
        'https://kb.mailpoet.com/article/258-re-installing-updating-the-plugin-via-ftp',
        ['target' => '_blank']
      );
      $errorMessages[Error::REINSTALL_PLUGIN] = $mpReinstallErrorMessage;
    }

    $errorResponse = new ErrorResponse(
      $errorMessages,
      [],
      $responseStatus
    );
    return $errorResponse;
  }

  private function logError(Throwable $e): void {
    // logging to the php log
    if (function_exists('error_log')) {
      error_log((string)$e); // phpcs:ignore Squiz.PHP.DiscouragedFunctions
    }
    // logging to the MailPoet table
    $this->loggerFactory->getLogger(LoggerFactory::TOPIC_API)->warning($e->getMessage(), [
      'requestMethod' => $this->requestMethod,
      'requestEndpoint' => $this->requestEndpoint,
      'exceptionMessage' => $e->getMessage(),
      'exceptionTrace' => $e->getTrace(),
    ]);
  }
}