def get_objective_banks_by_record_type(self, objective_bank_record_type=None):
raise Unimplemented()<EOL>
Gets a ObjectiveBankList containing the given objective bank
        record Type.
        In plenary mode, the returned list contains all known objective
        banks or an error results. Otherwise, the returned list may
        contain only those objective banks that are accessible through
        this session.
        arg:    objectiveBankRecordType (osid.type.Type): an objective
                bank record type
        return: (osid.learning.ObjectiveBankList) - the returned
                ObjectiveBank list
        raise:  NullArgument - objectiveBankRecordType is null
        raise:  OperationFailed - unable to complete request
        raise:  PermissionDenied - authorization failure
        compliance: mandatory - This method must be implemented.