@utilities.arguments_not_none<EOL><INDENT>def get_banks_by_parent_genus_type(self, bank_genus_type):<DEDENT>
raise errors.Unimplemented()<EOL>
Gets a ``BankList`` corresponding to the given bank genus ``Type`` and include any additional banks with genus types derived from the specified ``Type``.

        In plenary mode, the returned list contains all known banks or
        an error results. Otherwise, the returned list may contain only
        those banks that are accessible through this session.

        arg:    bank_genus_type (osid.type.Type): a bank genus type
        return: (osid.assessment.BankList) - the returned ``Bank`` list
        raise:  NullArgument - ``bank_genus_type`` is ``null``
        raise:  OperationFailed - unable to complete request
        raise:  PermissionDenied - authorization failure occurred
        *compliance: mandatory -- This method must be implemented.*