code: def _proper_namespace(self, owner=None, app=None, sharing=None):
          
          if owner is None and app is None and sharing is None: # No namespace provided
              if self._state is not None and 'access' in self._state:
                  return (self._state.access.owner,
                          self._state.access.app,
                          self._state.access.sharing)
              else:
                  return (self.service.namespace['owner'],
                          self.service.namespace['app'],
                          self.service.namespace['sharing'])
          else:
              return (owner,app,sharing)
docs: Produce a namespace sans wildcards for use in entity requests.
  
          This method tries to fill in the fields of the namespace which are `None`
          or wildcard (`'-'`) from the entity's namespace. If that fails, it uses
          the service's namespace.
  
          :param owner:
          :param app:
          :param sharing:
          :return: