def adata():
    adata = ad.AnnData(np.zeros((100, 100)))
    adata.obsm["o"] = np.zeros((100, 50))
    adata.varm["o"] = np.zeros((100, 50))
    return adata
def _roots(kindpats):
    """Returns root directories to match recursively from the given patterns."""
    roots, dirs = _patternrootsanddirs(kindpats)
    return roots