presto-parser/src/main/java/io/prestosql/sql/tree/DefaultTraversalVisitor.java/DefaultTraversalVisitor/visitValues
class DefaultTraversalVisitor:    @Override
    protected R visitValues(Values node, C context)
    {
        for (Expression row : node.getRows()) {
            process(row, context);
        }
        return null;
    }