Starts the session.
@api
boolean True if started.
\RuntimeException If something goes wrong starting the session.
Overrides SessionStorageInterface::start
public function start() {
if ($this->started && !$this->closed) {
return true;
}
if (empty($this->id)) {
$this->id = $this
->generateId();
}
$this
->loadSession();
return true;
}