src/CSRF.php
public static function getToken($token_name = self::TOKEN_NAME)
	{
		if (empty($_SESSION[$token_name])) {
			static::generateToken($token_name);
		}

		return $_SESSION[$token_name];
	}
public static function getToken($token_name = self::TOKEN_NAME)
	{
		if (empty($_SESSION[$token_name])) {
			static::generateToken($token_name);
		}

		return $_SESSION[$token_name];
	}
Get the token.  If it's not defined, this will go ahead and generate one.

@param string $token_name - defaults to the default token name
@return string