presto-main/src/main/java/io/prestosql/operator/scalar/VarbinaryFunctions.java/VarbinaryFunctions/md5
class VarbinaryFunctions:    @Description("compute md5 hash")
    @ScalarFunction
    @SqlType(StandardTypes.VARBINARY)
    public static Slice md5(@SqlType(StandardTypes.VARBINARY) Slice slice)
    {
        return Slices.wrappedBuffer(Hashing.md5().hashBytes(slice.getBytes()).asBytes());
    }