SAP IDoc Read Snap

I am having to read IDOC from SAP system that has over 10 segments. I see SAP Read snap can read idocs given idoc number but it returns all the segments at once. I have requirement to do transformation on individual segments and the segments also have to be joined back together to produce one set of records. Is there a snap that I can work with to read individual segments from the source idoc?

Thank you,