docs: def getMetadata(self, objectId=None, **filters):
          """ Request metadata about a text or a collection
  
          :param objectId: Filter for some object identifier
          :param filters: Kwargs parameters. URN and Inv are available
          :return: GetCapabilities CTS API request response
          """
          filters.update({"urn": objectId})
          return self.getCapabilities(**filters)