presto-main/src/main/java/io/prestosql/sql/gen/JoinCompiler.java/JoinCompiler/compileLookupSourceFactory
class JoinCompiler:    public LookupSourceSupplierFactory compileLookupSourceFactory(List<? extends Type> types, List<Integer> joinChannels, Optional<Integer> sortChannel)
    {
        return compileLookupSourceFactory(types, joinChannels, sortChannel, Optional.empty());
    }