public function sendRequest($request)
	{
		// Check if request was passed in
		if (!$request) {
			throw new InvalidArgumentException('No data was passed into the provision request');
		}

		return $this->client->post($this->prv_url, [
			'Content-type'             => 'text/xml',
			'Content-length'           => strlen($request),
			'MMProvision-Access-Token' => $this->prv_token,
		], $request);
	}