code: def add_node(self, node: str) -> None:
      if node not in self.adj_list:
          self.adj_list[node] = set()
  
file_path: wandb/wandb/sdk/lib/_settings_toposort_generate.py
imports: import inspect
  import sys
  from typing import Dict, List, Set, Tuple
  from wandb.errors import UsageError
  from wandb.sdk.wandb_settings import Settings
label_desc: Use image node_id 2 for calling the Graph obj's underlying member method code with example usage: obj.add_node(node) without return types