Quick'n'dirty cache with convenience method
Example:
$cache->get('message', function() { return 'Hello World'; });
Will return the message from cache if present and will generate it
by executing the callback and store it in the cache before returning the value.
public function getTemplate()
{
return $this->cache->get(__METHOD__, function () {
$res = $this->cfnClient->getTemplate(['StackName' => $this->getName()]);
return $res->get('TemplateBody');
});
}
