(self, value)
| 770 | return self._metadata |
| 771 | |
| 772 | def set_metadata(self, value): |
| 773 | assert isinstance(value, Metadata), \ |
| 774 | 'metadata must be Metadata, got {}'.format(type(value)) |
| 775 | self._metadata = value |
| 776 | self._validate_metadata() |
| 777 | |
| 778 | def _validate_metadata(self): |
| 779 | if self._metadata is None: |