entry.addField("vtag", vtag.getBytes());
entry.addField("source", source.toBytes());
entry.addField("sourcefield", sourceField.getBytes());
entry.addData(SOURCE_FIELD_KEY, sourceField.getBytes());
entry.addData(VTAG_KEY, vtag.getBytes());
return entry;
}
public Set<RecordId> getReferrers(RecordId record, SchemaId vtag) throws LinkIndexException, InterruptedException {