private AbstractSAMLArtifact getSAMLArtifactType() {
        if (this.saml2compliant) {
            return new SAML2ArtifactType0004(ENDPOINT_ID, newAssertionHandle(), this.sourceIdDigest);
        }
        return new SAML1ArtifactType0001(this.sourceIdDigest, newAssertionHandle());
    }
{@inheritDoc}
We ignore prefixes for SAML compliance.
support/cas-server-support-saml-core-api/src/main/java/org/apereo/cas/support/saml/util/SamlCompliantUniqueTicketIdGenerator.java