presto-main/src/main/java/io/prestosql/sql/planner/plan/TableWriterNode.java/CreateReference/CreateReference
class CreateReference:        public CreateReference(String catalog, ConnectorTableMetadata tableMetadata, Optional<NewTableLayout> layout)
        {
            this.catalog = requireNonNull(catalog, "catalog is null");
            this.tableMetadata = requireNonNull(tableMetadata, "tableMetadata is null");
            this.layout = requireNonNull(layout, "layout is null");
        }