boolean isCTVerificationEnabled(String hostname) {
        if (hostname == null) {
            return false;
        }

        // Bypass the check. This is used for testing only
        if (ctVerificationEnabled) {
            return true;
        }
        return Platform.isCTVerificationRequired(hostname);
    }
Returns X.509 key manager or null for none.
common/src/main/java/org/conscrypt/SSLParametersImpl.java