def delete_objective_bank(self, objective_bank_id=None):
from dlkit.abstract_osid.id.primitives import Id as ABCId<EOL>if objective_bank_id is None:<EOL><INDENT>raise NullArgument()<EOL><DEDENT>if not isinstance(objective_bank_id, ABCId):<EOL><INDENT>raise InvalidArgument('<STR_LIT>')<EOL><DEDENT>try:<EOL><INDENT>objective_bank = ObjectiveBankLookupSession(proxy=self._proxy,<EOL>runtime=self._runtime).get_objective_bank(objective_bank_id)<EOL><DEDENT>except Exception:<EOL><INDENT>raise<EOL><DEDENT>url_path = construct_url('<STR_LIT>',<EOL>bank_id=objective_bank_id)<EOL>result = self._delete_request(url_path)<EOL>return objects.ObjectiveBank(result)<EOL>
Deletes an ObjectiveBank.

        arg:    objectiveBankId (osid.id.Id): the Id of the
                ObjectiveBank to remove
        raise:  NotFound - objectiveBankId not found
        raise:  NullArgument - objectiveBankId is null
        raise:  OperationFailed - unable to complete request
        raise:  PermissionDenied - authorization failure
        compliance: mandatory - This method must be implemented.