def METHOD_NAME(self, message=None, webhook=None):
    """Send the http request using the Slack webhook."""
    webhook = webhook or app.SLACK_WEBHOOK
    log.info('Sending slack message: {message}', {'message': message})
    log.info('Sending slack message  to url: {url}', {'url': webhook})
    headers = {'Content-Type': 'application/json'}
    data = {
        'text': message,
        'username': 'MedusaBot',
        'icon_url': 'https://cdn.pymedusa.com/images/ico/favicon-310.png'
    }
    try:
        r = requests.post(webhook, data=json.dumps(data), headers=headers)
        r.raise_for_status()
    except Exception:
        log.exception('Error Sending Slack message')
        return False
    return True