code: private void populateRelationList(Task task, TaskField field, String data)
     {
        DeferredRelationship dr = new DeferredRelationship();
        dr.setTask(task);
        dr.setField(field);
        dr.setData(data);
        m_deferredRelationships.add(dr);
     }
docs: Populates a relation list.
  
  @param task parent task
  @param field target task field
  @param data MPX relation list data