string getToken() Get the CSRF token value.

void flashInput(array $value) Flash an input array to the session.

void comment(string $string, null|int|string $verbosity = null) Write a

SessionManager class SessionManager extends

mixed increment(string $key, int $amount = 1) Increment the value of an

getId() {@inheritdoc}

Repository getCache()

SessionHandlerInterface getHandler()

read($sessionId) {@inheritdoc} Parameters

void flush() Remove all of the items from the session.