old_contents: """
  Grains from cloud metadata servers at 169.254.169.254 in
  google compute engine
  
  .. versionadded:: 3005.0
  
  :depends: requests
  
  To enable these grains that pull from the http://169.254.169.254/computeMetadata/v1/
  metadata server set `metadata_server_grains: True` in the minion config.
  
  .. code-block:: yaml
  
      metadata_server_grains: True
  
  """
  
  import logging
  
  import salt.utils.http as http
  import salt.utils.json
  
  HOST = "http://169.254.169.254"
  URL = f"{HOST}/computeMetadata/v1/?alt=json&recursive=true"
  log = logging.getLogger(__name__)
  
  
  def __virtual__():
      # Check if metadata_server_grains minion option is enabled
      if __opts__.get("metadata_server_grains", False) is False:
          return False
      googletest = http.query(HOST, status=True, headers=True)
      if (
          googletest.get("status", 404) != 200
          or googletest.get("headers", {}).get("Metadata-Flavor", False) != "Google"
      ):
          return False
      return True
  
  
  def metadata():
      log.debug("All checks true - loading gce metadata")
      result = http.query(URL, headers=True, header_list=["Metadata-Flavor: Google"])
      metadata = salt.utils.json.loads(result.get("body", {}))
  
      return metadata
  
new_contents: """
  Grains from cloud metadata servers at 169.254.169.254 in
  google compute engine
  
  .. versionadded:: 3005.0
  
  :depends: requests
  
  To enable these grains that pull from the http://169.254.169.254/computeMetadata/v1/
  metadata server set `metadata_server_grains: True` in the minion config.
  
  .. code-block:: yaml
  
      metadata_server_grains: True
  
  """
  
  import logging
  
  import salt.utils.http as http
  import salt.utils.json
  
  HOST = "http://169.254.169.254"
  URL = f"{HOST}/computeMetadata/v1/?alt=json&recursive=true"
  log = logging.getLogger(__name__)
  
  
  def __virtual__():
      # Check if metadata_server_grains minion option is enabled
      if __opts__.get("metadata_server_grains", False) is False:
          return False
      googletest = http.query(HOST, status=True, headers=True)
      if (
          googletest.get("status", 404) != 200
          or googletest.get("headers", {}).get("Metadata-Flavor", False) != "Google"
      ):
          return False
      return True
  
  
  def metadata():
      '''Takes no arguments, returns a dictionary of metadata values from Google.'''
      log.debug("All checks true - loading gce metadata")
      result = http.query(URL, headers=True, header_list=["Metadata-Flavor: Google"])
      metadata = salt.utils.json.loads(result.get("body", {}))
  
      return metadata
  
subject: add docstring to metadata function