code: def all_entity_feat(self) -> np.ndarray:
      if self._all_entity_feat is None:
          path = osp.join(self.processed_dir, "entity_feat.npy")
          self._all_entity_feat = np.load(path)
      return self._all_entity_feat
  
imports: from typing import Optional, Union, Dict
  import os
  import shutil
  import os.path
  import torch
  import numpy
  import pandas
  from ogb.utils.url import decide_download, download_url, extract_zip, makedirs
label_desc: Use image node_id 7 for calling the WikiKG90MDataset obj's underlying member method code with example usage: obj.all_entity_feat() and returns: self