public function api_call( $body, $action = null ) {

		$body['access_token'] = $this->get_google_client();

		$params = array(
			'endpoint' => self::API_ENDPOINT,
			'body'     => $body,
			'action'   => $action,
			'timeout'  => 10,
		);

		$response = Api_Server::api_call( $params );

		if ( 200 !== $response['statusCode'] ) {
			throw new \Exception( $params['endpoint'] . ' failed' );
		}

		return $response;

	}