public static String readFile(String fileName, Class<?> clazz) throws FileNotFoundException {
        return readFile(fileName, clazz, ResourceLocation.CLASSPATH);
    }
@Test
    public void testReadFile_ClasspathRoot() {
        assertThrows(FileNotFoundException.class, () -> {
            EmbeddedResourceLoader.readFile("nonexistent.txt", this.getClass(),
                EmbeddedResourceLoader.ResourceLocation.CLASSPATH_ROOT);
        });
    }