assertNull(result);
    }

    @Test
    void testPopulateWithEmptyLines() throws Exception {
        // Create a temporary lmhosts file with empty lines
        File lmhostsFile = tempDir.resolve("lmhosts_empty").toFile();
        try (FileWriter writer = new FileWriter(lmhostsFile)) {
            writer.write("192.168.1.100 HOST1\n");
            writer.write("\n");
            writer.write("   \n");