code: def __get_yubico_users(username):
      '''
      Grab the YubiKey Client ID & Secret Key
      '''
      user = {}
  
      try:
          if __opts__['yubico_users'].get(username, None):
              (user['id'], user['key']) = list(__opts__['yubico_users'][username].values())
          else:
              return None
      except KeyError:
          return None
  
      return usef __get_yubico_users(username):
      '''
      Grab the YubiKey Client ID & Secret Key
      '''
      user = {}
  
      try:
          if __opts__['yubico_users'].get(username, None):
              (user['id'], user['key']) = list(__opts__['yubico_users'][username].values())
          else:
              return None
      except KeyError:
          return None
  
      return user
docs: Grab the YubiKey Client ID & Secret Key