@utilities.arguments_not_none<EOL><INDENT>def get_authorizations_ids_by_vault(self, vault_ids):<DEDENT>
<EOL>id_list = []<EOL>for authorization in self.get_authorizations_by_vault(vault_ids):<EOL><INDENT>id_list.append(authorization.get_id())<EOL><DEDENT>return IdList(id_list)<EOL>
Gets the list of ``Authorization Ids`` corresponding to a list of ``Vault`` objects.

        arg:    vault_ids (osid.id.IdList): list of vault ``Ids``
        return: (osid.id.IdList) - list of authorization ``Ids``
        raise:  NullArgument - ``vault_ids`` is ``null``
        raise:  OperationFailed - unable to complete request
        raise:  PermissionDenied - authorization failure
        *compliance: mandatory -- This method must be implemented.*