shadows/framework/src/main/java/org/robolectric/shadows/ShadowPausedSystemClock.java
@Implementation
  protected static boolean setCurrentTimeMillis(long millis) {
    if (currentTimeMillis > millis) {
      return false;
    }

    currentTimeMillis = millis;
    for (Listener listener : listeners) {
      listener.clockUpdated(currentTimeMillis);
    }
    return true;
  }
@Implementation
  protected static boolean setCurrentTimeMillis(long millis) {
    if (currentTimeMillis > millis) {
      return false;
    }

    currentTimeMillis = millis;
    for (Listener listener : listeners) {
      listener.clockUpdated(currentTimeMillis);
    }
    return true;
  }
Sets the current wall time.

<p>Currently does not perform any permission checks.

@return false if specified time is less than current time.