read($sessionId) {@inheritdoc} Parameters

SessionBagInterface

setId(string $id) Sets the session ID. Parameters

string getName() Gets this bag's name.

add(string $type, string $message) Adds a flash message for type.

bool start() Starts the session. Return

setSaveHandler(

class FlashBag implements

array all() Gets and clears flashes from the stack.

bool has(string $name) Checks if an attribute is defined.