presto-main/src/main/java/io/prestosql/sql/planner/DeterminismEvaluator.java/DeterminismEvaluator/Visitor
class DeterminismEvaluator:        public Visitor(Function<FunctionCall, FunctionMetadata> functionMetadataSupplier)
        {
            this.functionMetadataSupplier = functionMetadataSupplier;
        }