docstr: Decide if a new edge should be added.
docstr_tok: ["Decide","if","a","new","edge","should","be","added","."]
code: def add_edge_or_not(self, a=None):
      """Decide if a new edge should be added."""
      return NotImplementedError
  
imports: import os
  import dgl
  import torch.nn
  import torch
  from functools import partial
  import torch.nn.functional
  from torch.distributions import Bernoulli
  from torch.distributions import Categorical
  import torch.utils.model_zoo
label_desc: Use image node_id 3 for calling the DGMGSkeleton obj's underlying member method code with example usage: obj.add_edge_or_not(a) and returns: NotImplementedError