code: public void setSubFlowsData(Map<String, Long> runningPlansIds, Map<String, Long> beginStepsIds) {
          contextMap.put(RUNNING_PLANS_MAP, (Serializable) runningPlansIds);
          contextMap.put(BEGIN_STEPS_MAP, (Serializable) beginStepsIds);
      }
docs: put all the data relevant for sub flows: map of runningPlanIds and list of BeginStepIds
  
  @param runningPlansIds - map of flowUUID to runningPlanId
  @param beginStepsIds -  map of flowUUID to beginStepId