*/
    boolean isResolveHashes();

    /**
     * Check if this referral needs to be resolved further
     *
     * @return whether this refrral needs to be resolved further
     */
    boolean isIntermediate();

    /**
     * Combine this referral with another to form a chain
     *
     * @param next the referral to combine with
     * @return new referral, combining a chain of referrals
     */

    }

    @Test
    public void testExceptionChaining() {
        IOException rootCause = new IOException("Root cause");
        RuntimeException intermediateCause = new RuntimeException("Intermediate", rootCause);
        CurlException exception = new CurlException("Final message", intermediateCause);

        assertEquals("Final message", exception.getMessage());