code: def select_action(self):
      pass
  
file_path: singa/examples/model_selection/TRAILS-Database-Native-Model-Selection/internal/ml/model_selection/src/search_space/mlp_api/rl_policy.py
imports: from src.search_space.core.rl_policy import RLPolicyBase
label_desc: Use image node_id 3 for calling the RLMlpSPaceTopology obj's underlying member method code with example usage: obj.select_action() without return types