@AfterAll
    public static void destroy() {
        val file = new File("ca.crl");
        if (file.exists()) {
            file.delete();
        }
    }
Gets the unit test parameters.

@return Test parameter data.
support/cas-server-support-x509-core/src/test/java/org/apereo/cas/adaptors/x509/authentication/handler/support/CRLDistributionPointRevocationCheckerTests.java