code: def forward(self):
      pass
  
file_path: RecBole/recbole/model/general_recommender/admmslim.py
imports: from recbole.utils.enum_type import ModelType
  import numpy
  import scipy.sparse
  import torch
  from recbole.utils import InputType
  from recbole.model.abstract_recommender import GeneralRecommender
label_desc: Use image node_id 2 for calling the ADMMSLIM obj's underlying member method code with example usage: obj.forward() without return types