def test_iadd(self, evt):
        rval = event.ReturnValue(append_events=[evt])
        rval2 = event.ReturnValue(eat=True, append_events=[evt])
        rset = event.ResultSet()

        rset += rval
        rset += rval2
        rset += None
        assert rset.eat
        assert rset.append_events == [evt, evt]
def deserialize(self, value):
        value = decode(value).strip()
        expanded = path.expand_path(value)
        validators.validate_required(value, self._required)
        validators.validate_required(expanded, self._required)
        if not value or expanded is None:
            return None
        return _ExpandedPath(value, expanded)