def get_parent_objective_bank_nodes(self):
parent_objective_bank_nodes = []<EOL>for node in self._my_map['<STR_LIT>']:<EOL><INDENT>parent_objective_bank_nodes.append(ObjectiveBankNode(<EOL>node._my_map,<EOL>runtime=self._runtime,<EOL>proxy=self._proxy,<EOL>lookup_session=self._lookup_session))<EOL><DEDENT>return ObjectiveBankNodeList(parent_objective_bank_nodes)<EOL>
Gets the parents of this objective bank.

        return: (osid.learning.ObjectiveBankNodeList) - the parents of
                the ``id``
        *compliance: mandatory -- This method must be implemented.*