code: def _check_if_requirements_met(self) -> None:
      env_var = requirement_env_var_mapping[self.requirement]
      if not os.getenv(env_var):
          raise Exception(
              f'You must explicitly enable this feature with `wandb.require("{self.requirement})"'
          )
  
file_path: wandb/wandb/sdk/wandb_require_helpers.py
imports: import os
  from functools import wraps
  from typing import Any, Callable, Dict, TypeVar, cast
label_desc: Use image node_id 3 for calling the RequiresMixin obj's underlying member method code with example usage: obj._check_if_requirements_met() without return types