public function updateEventType()
{
$name = 'New Event Name';
$headerTemplate = 'New event header template';
$detailTemplate = 'New event detail template';
$response = $this->timeline->updateEventType(self::APP_ID, $this->eventTypeId, $name, $headerTemplate, $detailTemplate);
$eventType = json_decode((string) $response->getBody());
$this->assertEquals($name, $eventType->name);
$this->assertEquals($headerTemplate, $eventType->headerTemplate);
$this->assertEquals($detailTemplate, $eventType->detailTemplate);
$this->assertEquals(200, $response->getStatusCode());
return $response;
}