@Override
    public void before(ExtensionContext context) throws Exception {
        try {
            delegate.before();
        } catch (Throwable t) {
            throw new RuntimeException("Failed to set up before callback", t);
        }
    }
Calls {@link #start()} if auto-start is enabled.
junit5/src/main/java/com/linecorp/armeria/testing/junit5/server/ServerExtension.java