code: def get_oauth_authcfg(authcfg_id=AUTHCFG_ID):
      
      # Handle empty strings
      if not authcfg_id:
          authcfg_id = AUTHCFG_ID
      configs = auth_manager().availableAuthMethodConfigs()
      if authcfg_id in configs \
              and configs[authcfg_id].isValid() \
              and configs[authcfg_id].method() == 'OAuth2':
          return configs[authcfg_id]
      return None
docs: Check if the given authcfg_id (or the default) exists, and if it's valid
      OAuth2, return the configuration or None