// the directory itself, if the dirPath doesn't exist this function doesn't return
// an error.
func readDirFn(dirPath string, fn func(name string, typ os.FileMode) error) error {
	fd, err := openFileWithFD(dirPath, readMode, 0o666)
	if err != nil {
		if osErrToFileErr(err) == errFileNotFound {
			return nil
		}
		if !osIsPermission(err) {
			return osErrToFileErr(err)
		}
		// There may be permission error when dirPath

    )


@app.get("/dict", response_model=Model, response_model_by_alias=False)
def read_dict():
    return {"alias": "Foo"}


@app.get("/model", response_model=Model, response_model_by_alias=False)
def read_model():
    return Model(alias="Foo")


@app.get("/list", response_model=list[Model], response_model_by_alias=False)
def read_list():
    return [{"alias": "Foo"}, {"alias": "Bar"}]

	if contextCanceled(ctx) {
		return nil, time.Time{}, ctx.Err()
	}

	if err := checkPathLength(itemPath); err != nil {
		return nil, time.Time{}, err
	}

	f, err := OpenFile(itemPath, readMode, 0o666)
	if err != nil {
		return nil, time.Time{}, err
	}
	defer f.Close()
	stat, err := f.Stat()
	if err != nil {
		return nil, time.Time{}, err
	}
	if stat.IsDir() {