def populate_from_seqinfo(self, seqinfo):
        """Populate sequence_ids below this node from a seqinfo file object."""
        for row in csv.DictReader(seqinfo):
            node = self.index.get(row['tax_id'])
            if node:
                node.sequence_ids.add(row['seqname'])
Populate sequence_ids below this node from a seqinfo file object.