/**
     * Expands a file path using the file path mapping.
     * @param value The original path value.
     * @return The expanded path or the original value if no mapping exists.
     */
    protected String expandPath(final String value) {
        if (value != null && filePathMap.containsKey(value)) {
            return filePathMap.get(value);
        }
        return value;
    }

    /**

        assertTrue("Long commands should be settable", true);
    }

    // Test path expansion logic
    public void test_path_expansion() throws Exception {
        // Test the expandPath functionality indirectly through variable replacement
        final String testCommand = "convert ${url} -resize 100x100 ${outputFile}";
        final String tempPath = "/tmp/source.pdf";

                final String outputPath = outputFile.getAbsolutePath();
                final List<String> cmdList = new ArrayList<>();
                for (final String value : commandList) {
                    cmdList.add(expandPath(value.replace("${url}", tempPath).replace("${outputFile}", outputPath)));
                }

                if (executeCommand(thumbnailId, cmdList) != 0) {