@utilities.arguments_not_none<EOL><INDENT>def get_child_banks(self, bank_id):<DEDENT>
<EOL>if self._catalog_session is not None:<EOL><INDENT>return self._catalog_session.get_child_catalogs(catalog_id=bank_id)<EOL><DEDENT>return BankLookupSession(<EOL>self._proxy,<EOL>self._runtime).get_banks_by_ids(<EOL>list(self.get_child_bank_ids(bank_id)))<EOL>
Gets the children of the given bank.

        arg:    bank_id (osid.id.Id): the ``Id`` to query
        return: (osid.assessment.BankList) - the children of the bank
        raise:  NotFound - ``bank_id`` is not found
        raise:  NullArgument - ``bank_id`` is ``null``
        raise:  OperationFailed - unable to complete request
        raise:  PermissionDenied - authorization failure
        *compliance: mandatory -- This method must be implemented.*