@Override
    public boolean supports(final SamlRegisteredService service) {
        val metadataLocation = service.getMetadataLocation();
        return metadataLocation.trim().startsWith("json://");
    }
This is {@link JsonResourceMetadataResolver}.

@author Misagh Moayyed
@since 6.1.0
support/cas-server-support-saml-idp-metadata/src/main/java/org/apereo/cas/support/saml/services/idp/metadata/cache/resolver/JsonResourceMetadataResolver.java