code: def create_features(self):
      features = torch.arange(self.num_nodes)
      return features
  
imports: import os
  from functools import partial
  import dgl
  import dgl.function
  import torch
  import torch.nn
  import torch.nn.functional
  from dgl import DGLGraph
label_desc: Use image node_id 3 for calling the Model obj's underlying member method code with example usage: obj.create_features() and returns: features