presto-main/src/main/java/io/prestosql/split/ConnectorAwareSplitSource.java/ConnectorAwareSplitSource/ConnectorAwareSplitSource
class ConnectorAwareSplitSource:    public ConnectorAwareSplitSource(CatalogName catalogName, ConnectorSplitSource source)
    {
        this.catalogName = requireNonNull(catalogName, "catalogName is null");
        this.source = requireNonNull(source, "source is null");
    }