shadows/framework/src/main/java/org/robolectric/shadows/ShadowPausedLooper.java
@Override
  public void runPaused(Runnable runnable) {
    if (isPaused && Thread.currentThread() == realLooper.getThread()) {
      // just run
      runnable.run();
    } else {
      throw new UnsupportedOperationException();
    }
  }
@Override
  public void runPaused(Runnable runnable) {
    if (isPaused && Thread.currentThread() == realLooper.getThread()) {
      // just run
      runnable.run();
    } else {
      throw new UnsupportedOperationException();
    }
  }
compatibility for now