code: def _validate_git_config(git_config):
      """Validates the git configuration.
  
      Checks all configuration values except 2FA_enabled are string types. The
      2FA_enabled configuration should be a boolean.
  
      Args:
          git_config: The configuration to validate.
      """
      if "repo" not in git_config:
          raise ValueError("Please provide a repo for git_config.")
      for key in git_config:
          if key == "2FA_enabled":
              if not isinstance(git_config["2FA_enabled"], bool):
                  raise ValueError(
                      "Please enter a bool type for 2FA_enabled'."
                  )
          elif not isinstance(git_config[key], six.string_types):
              raise ValueError("'{}' must be a string.".format(key))
  
imports: from __future__ import absolute_import
  import os
  from pathlib import Path
  import subprocess
  import tempfile
  import warnings
  import six
  from six.moves import urllib
label_desc: Use image node_id 2 for calling a global function with example usage: _validate_git_config(git_config) without return types