return nil
	}
	return &hcm.HttpFilter{
		Name:       authn_model.EnvoyJwtFilterName,
		ConfigType: &hcm.HttpFilter_TypedConfig{TypedConfig: protoconv.MessageToAny(filterConfigProto)},
	}
}

func defaultAuthnFilter() *authn_filter.FilterConfig {
	return &authn_filter.FilterConfig{
		Policy: &authn_alpha.Policy{},
		// we can always set this field, it's no-op if mTLS is not used.
		SkipValidateTrustDomain: true,
	}
}