private static boolean canLoad(String clazz) {
        try {
            Class.forName(clazz);
            return true;
        } catch (Exception e) {
            return false;
        }
    }
Kerberos exceptions that may require special handling. The standard Kerberos error codes
for these errors are retrieved using KrbException#errorCode() from the underlying Kerberos
exception thrown during {@link SaslClient#evaluateChallenge(byte[])}.
clients/src/main/java/org/apache/kafka/common/security/kerberos/KerberosError.java