when(mockConfig.getLmHostsFileName()).thenReturn(null);

        NbtAddress result = lmhosts.getByName(name, mockContext);

        assertNull(result);
    }

    @Test
    void testPopulateWithIPAddressComponents() throws Exception {
        // Test various IP address formats with different byte values
        File lmhostsFile = tempDir.resolve("lmhosts_ip_components").toFile();