presto-main/src/main/java/io/prestosql/sql/planner/Coercer.java/Rewriter/Rewriter
class Rewriter:        public Rewriter(Map<NodeRef<Expression>, Type> coercions, Set<NodeRef<Expression>> typeOnlyCoercions)
        {
            this.coercions = coercions;
            this.typeOnlyCoercions = typeOnlyCoercions;
        }