code: private List<TInput> getInputs(final List<Integer> taskletIds) {
  
      final List<TInput> inputList = new ArrayList<>(taskletIds.size());
  
      for(final int taskletId : taskletIds) {
        inputList.add(taskletIdInputMap.get(taskletId));
      }
  
      return inputList;
    }
docs: Gets the inputs on Tasklet aggregation completion.