class_docstr: View for node features which are all tensors.
class_docstr_tok: ["View","for","node","features","which","are","all","tensors","."]
code: def keys(self):
      return self._graph.node_feature_names()
  
imports: from collections import namedtuple
  from typing import Any, List, Union
  import torch
  from .utils import slice_to_list
label_desc: Use image node_id 5 for calling the NodeFeatView obj's underlying member method code with example usage: obj.keys() and returns: self