@Override
    public X509CRL fetch(final URL crl) throws Exception {
        return fetch(new UrlResource(crl));
    }
Handles the fetching of CRL objects based on resources.
Supports http/ldap resources.

@author Misagh Moayyed
@since 4.1
support/cas-server-support-x509-core/src/main/java/org/apereo/cas/adaptors/x509/authentication/ResourceCRLFetcher.java