def METHOD_NAME(self, loader):
    foo_conf_file = self.make_conf_file(loader.base_dir, "foo.yaml")
    mtime = os.path.getmtime(foo_conf_file)
    timestamps = {foo_conf_file: mtime}
    assert loader.needs_reload("foo", timestamps) == False
    timestamps[foo_conf_file] -= 10
    assert loader.needs_reload("foo", timestamps) == True