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 visitdir(self, dir):
        if self(dir):
            return "all"
        return self._matcher.visitdir(dir)