return None
    lang = lang.lower()
    return lang


def complete_existing_lang(incomplete: str):
    lang_path: Path
    for lang_path in get_lang_paths():
        if lang_path.is_dir() and lang_path.name.startswith(incomplete):
            yield lang_path.name


@app.callback()
def callback() -> None:
    # For MacOS with Cairo

import os
import shutil

from fastapi.testclient import TestClient


def test_main():
    if os.path.isdir("./static"):  # pragma: nocover
        shutil.rmtree("./static")
    if os.path.isdir("./templates"):  # pragma: nocover
        shutil.rmtree("./templates")
    shutil.copytree("./docs_src/templates/templates/", "./templates")
    shutil.copytree("./docs_src/templates/static/", "./static")

		}
		hdr, err := tr.Next()
		if err == io.EOF {
			break // End of archive
		}
		if err != nil {
			t.Fatal(err)
		}

		tmpName := name
		if entryInfo.IsDir() {
			tmpName += "/"
		}
		if hdr.Name != tmpName {
			t.Errorf("test fs has filename %v; archive header has %v",
				name, hdr.Name)
		}

		if entryInfo.Mode() != hdr.FileInfo().Mode() {

- Extend discovery GroupManager with Group lister interface ([#127524](https://github.com/kubernetes/kubernetes/pull/127524), [@mjudeikis](https://github.com/mjudeikis)) [SIG API Machinery]