initialize(array $array) Initializes the Bag.

class NullSessionHandler implements SessionHandlerInterface

class MimeTypeExtensionGuesser implements

string getId() Gets the session ID. Return

AbstractProxy getSaveHandler() Gets the save handler instance. Return Value AbstractProxy

matchAttribute(string $key, string $regexp) Adds a check for request attribute.

read($sessionId) {@inheritdoc} Parameters

open($savePath, $sessionName) {@inheritdoc}

string|null getFormat(string $mimeType) Gets the format associated with the mime type.

bool has(string $type) Has flash messages for a given type?