code: def _validate_level_for_non_repo_operation(self, level):
      from dvc.config import ConfigError
  
      if (
          self.config.dvc_dir is None
          and level in self.config.REPO_LEVELS
      ):
          raise ConfigError("Not inside a DVC repo")
  
imports: import argparse
  import os
  from funcy import set_in
  from dvc.cli import formatter
  from dvc.cli.command import CmdBaseNoRepo
  from dvc.cli.utils import append_doc_link
  from dvc.log import logger
  from dvc.ui import ui
label_desc: Use image node_id 8 for calling the CmdConfig obj's underlying member method code with example usage: obj._validate_level_for_non_repo_operation(level) without return types