code: def action_step(self):
      old_step_count = self.step_count
      self.step_count += 1
  
      return old_step_count
  
imports: from functools import partial
  import dgl
  import torch
  import torch.nn
  import torch.nn.functional
  from torch.distributions import Bernoulli, Categorical
label_desc: Use image node_id 3 for calling the DGMG obj's underlying member method code with example usage: obj.action_step() and returns: old_step_count