770
776
"""See VersionedFile.get_suffixes()."""
771
777
return [DATA_SUFFIX, INDEX_SUFFIX]
773
780
def has_ghost(self, version_id):
774
781
"""True if there is a ghost reference in the file to version_id."""
776
783
if self.has_version(version_id):
778
785
# optimisable if needed by memoising the _ghosts set.
787
793
def insert_data_stream(self, (format, data_list, reader_callable)):