def METHOD_NAME():
    X = np.zeros((M, N))
    obs = pd.DataFrame(
        dict(batch=np.array(["a", "b"])[np.random.randint(0, 2, M)]),
        index=[f"cell{i:03d}" for i in range(M)],
    )
    var = pd.DataFrame(index=[f"gene{i:03d}" for i in range(N)])
    return anndata.AnnData(X, obs=obs, var=var)