def _get_file_internal(self, *args, **kwargs):
super(Key, self)._get_file_internal(*args, **kwargs)<EOL>mimicdb.backend.sadd(tpl.bucket % self.bucket.name, self.name)<EOL>mimicdb.backend.hmset(tpl.key % (self.bucket.name, self.name),<EOL>dict(size=self.size, md5=self.md5))<EOL>
Called internally for any type of download. After download finishes,
        make sure the key is in the bucket set and save the metadata.