presto-main/src/main/java/io/prestosql/util/GraphvizPrinter.java/NodePrinter/visitCorrelatedJoin
class NodePrinter:        @Override
        public Void visitCorrelatedJoin(CorrelatedJoinNode node, Void context)
        {
            String correlationSymbols = Joiner.on(",").join(node.getCorrelation());
            String filterExpression = "";
            if (!node.getFilter().equals(TRUE_LITERAL)) {
                filterExpression = " " + node.getFilter().toString();
            }

            printNode(node, "CorrelatedJoin", correlationSymbols + filterExpression, NODE_COLORS.get(NodeType.JOIN));

            node.getInput().accept(this, context);
            node.getSubquery().accept(this, context);

            return null;
        }