classes/Http/SessionHandlerFactory.php
public function makeHandler($ident)
	{
		if (!isset($this->factories[$ident])) {
			throw new \InvalidArgumentException("Unknown session handler: $ident");
		}

		return $this->factories[$ident]();
	}
public function makeHandler($ident)
	{
		if (!isset($this->factories[$ident])) {
			throw new \InvalidArgumentException("Unknown session handler: $ident");
		}

		return $this->factories[$ident]();
	}
Make a handler.

@param  string $ident

@return \SessionHandlerInterface

@throws \InvalidArgumentException If ident is invalid