@utilities.arguments_not_none<EOL><INDENT>def get_assignable_objective_bank_ids_for_proficiency(self, objective_bank_id, proficiency_id):<DEDENT>
<EOL>return self.get_assignable_objective_bank_ids(objective_bank_id)<EOL>
Gets a list of objective banks including and under the given objective bank proficiency in which a specific proficiency can be assigned.

        arg:    objective_bank_id (osid.id.Id): the ``Id`` of the
                ``ObjectiveBank``
        arg:    proficiency_id (osid.id.Id): the ``Id`` of the
                ``Proficiency``
        return: (osid.id.IdList) - list of assignable objectiveBank
                ``Ids``
        raise:  NullArgument - ``objective_bank_id`` or
                ``proficiency_id`` is ``null``
        raise:  OperationFailed - unable to complete request
        *compliance: mandatory -- This method must be implemented.*