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 _on_event_box_size_allocate(self, event_box, allocation):
    if self._is_event_box_allocated_size:
      return