Groovy to get all the jobid's running under pipeline

Summary:

Hi Experts,

We are exploring how to get all job's under running parent pipeline job For example

1. Pipeline has 4 dlrs , want to get job'id of each process using Json loop then print subsequently dat files and log files
   abcplan_rtg_1233.dat
   abcplan_rtg_1234.dat
   /outbox/log/abcplan_rtg_1234.log

Currently , able to get pipeline Job id using groovy get method but unable to get all jobids under pipeline

Sample script

for(long delay = 50; status == IN_PROGRESS; delay = Math.min(1000, delay * 2)) {

                  sleep(delay)

                  xxxxResponse = operation.application.getConnection("xxxxxxx").get("/aif/rest/V1/xxxxxxx/" + jobId).asString()

                  status = JsonPath.parse(xxxxxResponse.body).read('$.status')