private boolean throwException = false;

        @Override
        public Ingester[] getIngesters() {
            return new Ingester[] { new TestIngester(throwException) };
        }

        public void setThrowException(boolean throwException) {
            this.throwException = throwException;
        }
    }

        }

        public void setPurgeCallCount(long count) {
            this.purgeCallCount = count;
        }

        public void setThrowException(boolean throwException) {
            this.throwException = throwException;
        }

        public void setExceptionMessage(String message) {
            this.exceptionMessage = message;
        }

        public long getPurgeExpiry() {

        int exitValue = 0;
        String processOutput = "Test output";
        RuntimeException throwException = null;

        @Override
        public JobProcess startProcess(String sessionId, List<String> cmdList, java.util.function.Consumer<ProcessBuilder> pbConsumer) {
            if (throwException != null) {
                throw throwException;
            }

            startProcessCalled = true;

        int exitValue = 0;
        String processOutput = "Test output";
        RuntimeException throwException = null;

        @Override
        public JobProcess startProcess(String sessionId, List<String> cmdList, java.util.function.Consumer<ProcessBuilder> pbConsumer) {
            if (throwException != null) {
                throw throwException;
            }

            startProcessCalled = true;

        }

        public void setExecuteResult(String executeResult) {
            this.executeResult = executeResult;
        }

        public void setThrowException(boolean throwException) {
            this.throwException = throwException;
        }

        // Expose protected methods for testing
        public void testAddSystemProperty(List<String> cmdList, String name, String defaultValue, String appendValue) {

        queryRescorer = new QueryRescorer() {
            @Override
            public RescorerBuilder<?> evaluate(Map<String, Object> params) {
                if (params != null && params.containsKey("throwException")) {
                    throw new RuntimeException("Test exception");
                }
                return createMockRescorerBuilder();
            }
        };

        // Test normal case

            doThrow(testException).when(mockSession).close();

            Exception thrownException = assertThrows(Exception.class, mockSession::close, "close() should propagate exceptions");
            assertEquals("Test close exception", thrownException.getMessage());
        }
    }

    @Nested
    @DisplayName("Configuration Access Tests")
    class ConfigurationAccessTest {

        when(mockDelegate.getResponseTimeout()).thenThrow(testException);

        // When & Then
        RuntimeException thrownException = assertThrows(RuntimeException.class, () -> {
            delegatingConfig.getResponseTimeout();
        });

        assertSame(testException, thrownException, "Should propagate exception from delegate");
        verify(mockDelegate).getResponseTimeout();
    }

    @Test