// Custom join method to avoid overriding final Thread.join()
        public void waitForCompletion(long millis) {
            // Mock implementation
        }

        @Override
        public String getOutput() {
            return output;
        }
    }

    // Mock Process implementation
    private class MockProcess extends Process {
        private final int exitValue;

        }

        @Override
        public void run() {
            // Override run to do nothing in test
        }

        @Override
        public String getOutput() {
            return output;
        }
    }

    private static class TestServletContext implements ServletContext {
        File parentFile = new File("/test/webapp");

        @Override

        assertEquals("B1", itemList.get(1).getOutputs()[0]);
        assertFalse(itemList.get(1).isUpdated());

        assertEquals(1, itemList.get(2).getInputs().length);
        assertEquals(2, itemList.get(2).getOutputs().length);
        assertEquals("c1", itemList.get(2).getInputs()[0]);
        assertEquals("C1", itemList.get(2).getOutputs()[0]);
        assertEquals("C2", itemList.get(2).getOutputs()[1]);

        assertEquals("a", synonymItem.getInputs()[0]);
        assertEquals("A", synonymItem.getInputs()[1]);
        assertEquals(2, synonymItem.getOutputs().length);
        assertEquals("b", synonymItem.getOutputs()[0]);
        assertEquals("B", synonymItem.getOutputs()[1]);
        assertNull(synonymItem.getNewInputs());
        assertNull(synonymItem.getNewOutputs());
        assertFalse(synonymItem.isUpdated());

        }
        return String.join("\n", inputs);
    }

    /**
     * Gets the original output synonyms.
     *
     * @return The original output synonyms.
     */
    public String[] getOutputs() {
        return outputs;
    }

    /**
     * Gets the output synonyms as a newline-separated string.
     *
     * @return The output synonyms as a string.
     */