i am try
Saml2MetadataFilter filter = new Saml2MetadataFilter( (RelyingPartyRegistrationResolver) relyingPartyRegistrationResolver,
new OpenSamlMetadataResolver());

or

Saml2MetadataFilter filter = new Saml2MetadataFilter(
(RelyingPartyRegistrationRepository) relyingPartyRegistrationResolver,
new OpenSamlMetadataResolver());

but

Caused by: java.lang.IllegalArgumentException: entityId cannot be null or empty