Returns the {@code SessionIdGenerator} used by the {@link #generateSessionId(hunt.shiro.session.Session)}
method. Unless overridden by the {@link #setSessionIdGenerator(SessionIdGenerator)} method, the default instance
is a {@link JavaUuidSessionIdGenerator}.
@return the {@code SessionIdGenerator} used by the {@link #generateSessionId(hunt.shiro.session.Session)}
method.
Returns the {@code SessionIdGenerator} used by the {@link #generateSessionId(hunt.shiro.session.Session)} method. Unless overridden by the {@link #setSessionIdGenerator(SessionIdGenerator)} method, the default instance is a {@link JavaUuidSessionIdGenerator}.
@return the {@code SessionIdGenerator} used by the {@link #generateSessionId(hunt.shiro.session.Session)} method.