@utilities.arguments_not_none<EOL><INDENT>def get_objectives_by_objective_banks(self, objective_bank_ids):<DEDENT>
<EOL>objective_list = []<EOL>for objective_bank_id in objective_bank_ids:<EOL><INDENT>objective_list += list(<EOL>self.get_objectives_by_objective_bank(objective_bank_id))<EOL><DEDENT>return objects.ObjectiveList(objective_list)<EOL>
Gets the list of ``Objectives`` corresponding to a list of ``ObjectiveBanks``.

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