}

        @Test
        @DisplayName("Should check if intermediate")
        void testIsIntermediate() {
            // Test with mock
            when(mockReferralData.isIntermediate()).thenReturn(false);
            assertFalse(mockReferralData.isIntermediate());
            verify(mockReferralData, times(1)).isIntermediate();

            // Test with concrete implementation

        }

        @Test
        @DisplayName("Should get and set intermediate flag")
        void testIntermediate() {
            assertFalse(referralData.isIntermediate());
            referralData.intermediate();
            assertTrue(referralData.isIntermediate());
        }
    }

    @Nested
    @DisplayName("Cache Management Tests")
    class CacheManagementTests {

     */
    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
     */

    }

    /**
     * Mark this referral as intermediate (requires further resolution)
     */
    public void intermediate() {
        this.intermediate = true;
    }

    /**
     * @return the intermediate
     */
    @Override
    public boolean isIntermediate() {
        return this.intermediate;
    }

    @Override
    public String toString() {

                }
            }
        }

        if (dr == null && path != null) {
            dr = getStandaloneCached(domain, root, path, now);
        }

        if (dr != null && dr.isIntermediate()) {
            dr = resolveIntermediates(tf, path, depthLimit, dr);
        }

        return dr;

    }

    /**
     * @param tf
     * @param path
     * @param depthLimit

        GsaConfigException exception = new GsaConfigException("Top level GSA error", intermediateCause);

        assertNotNull(exception);
        assertEquals("Top level GSA error", exception.getMessage());

        // Check first level cause
        assertNotNull(exception.getCause());
        assertEquals("Intermediate problem", exception.getCause().getMessage());

    void testExceptionChaining() {
        // Given
        Exception rootCause = new IllegalStateException("Root error");
        RuntimeCIFSException intermediateCause = new RuntimeCIFSException("Intermediate", rootCause);

        // When
        RuntimeCIFSException finalException = new RuntimeCIFSException("Final error", intermediateCause);

        // Then

        Exception intermediateCause = new IllegalStateException("Intermediate cause", rootCause);
        ScriptEngineException exception = new ScriptEngineException("Top level error", intermediateCause);

        assertEquals("Top level error", exception.getMessage());
        assertEquals(intermediateCause, exception.getCause());
        assertEquals("Intermediate cause", exception.getCause().getMessage());

   *
   * <p>This uses an efficient binary recursive algorithm to compute the factorial with balanced
   * multiplies. It also removes all the 2s from the intermediate products (shifting them back in at
   * the end).
   *
   * @throws IllegalArgumentException if {@code n < 0}
   */
  public static BigInteger factorial(int n) {
    checkNonNegative("n", n);

        // Test constructor with nested exceptions
        Throwable rootCause = new IllegalStateException("Root cause");
        Throwable intermediateCause = new RuntimeException("Intermediate cause", rootCause);
        String message = "Top level error";
        SearchEngineClientException exception = new SearchEngineClientException(message, intermediateCause);

        assertNotNull(exception);