code: def get_num_users_items(self):
      return self.n_users, self.n_items
  
file_path: dgl/examples/pytorch/NGCF/NGCF/utility/load_data.py
imports: import random
  import dgl
  import numpy
label_desc: Use image node_id 3 for calling the Data obj's underlying member method code with example usage: obj.get_num_users_items() and returns: self,  self