public function create($callbackUrl, $triggerValue, $usageCategory, $options = array()) {
        $options = new Values($options);

        $data = Values::of(array(
            'CallbackUrl' => $callbackUrl,
            'TriggerValue' => $triggerValue,
            'UsageCategory' => $usageCategory,
            'CallbackMethod' => $options['callbackMethod'],
            'FriendlyName' => $options['friendlyName'],
            'Recurring' => $options['recurring'],
            'TriggerBy' => $options['triggerBy'],
        ));

        $payload = $this->version->create(
            'POST',
            $this->uri,
            array(),
            $data
        );

        return new TriggerInstance($this->version, $payload, $this->solution['accountSid']);
    }