presto-main/src/main/java/io/prestosql/sql/planner/iterative/rule/LambdaCaptureDesugaringRewriter.java/LambdaCaptureDesugaringRewriter/withReferencedSymbols
class LambdaCaptureDesugaringRewriter:        public Context withReferencedSymbols(LinkedHashSet<Symbol> symbols)
        {
            return new Context(symbols);
        }