val result = AssignmentRecord(resolvedTarget, resolvedRhs, nextCallId(), assignmentMethod, originElement)
        mutableAssignments.add(result)
        return result
    }

    fun recordAddition(container: ObjectOrigin, dataObject: ObjectOrigin) {

  }

  private static final class PrintingEventListener extends EventListener {
    private static final Factory FACTORY = new Factory() {
      final AtomicLong nextCallId = new AtomicLong(1L);

      @Override public EventListener create(Call call) {
        long callId = nextCallId.getAndIncrement();
        System.out.printf("%04d %s%n", callId, call.request().url());
        return new PrintingEventListener(callId, System.nanoTime());
      }

```java
class PrintingEventListener extends EventListener {
  public static final Factory FACTORY = new Factory() {
    final AtomicLong nextCallId = new AtomicLong(1L);

    @Override public EventListener create(Call call) {
      long callId = nextCallId.getAndIncrement();
      System.out.printf("%04d %s%n", callId, call.request().url());
      return new PrintingEventListener(callId, System.nanoTime());
    }