def get_vaults(self):
<EOL>if self._catalog_session is not None:<EOL><INDENT>return self._catalog_session.get_catalogs()<EOL><DEDENT>collection = JSONClientValidated('<STR_LIT>',<EOL>collection='<STR_LIT>',<EOL>runtime=self._runtime)<EOL>result = collection.find().sort('<STR_LIT>', DESCENDING)<EOL>return objects.VaultList(result, runtime=self._runtime, proxy=self._proxy)<EOL>
Gets all ``Vaults``.

        In plenary mode, the returned list contains all known vaults or
        an error results. Otherwise, the returned list may contain only
        those vaults that are accessible through this session.

        return: (osid.authorization.VaultList) - a ``VaultList``
        raise:  OperationFailed - unable to complete request
        raise:  PermissionDenied - authorization failure
        *compliance: mandatory -- This method must be implemented.*