shadows/framework/src/main/java/org/robolectric/shadows/ShadowLauncherApps.java
public void notifyPackageAdded(String packageName) {
    for (Pair<LauncherApps.Callback, Handler> callbackPair : callbacks) {
      callbackPair.second.post(
          () -> callbackPair.first.onPackageAdded(packageName, Process.myUserHandle()));
    }
  }
public void notifyPackageAdded(String packageName) {
    for (Pair<LauncherApps.Callback, Handler> callbackPair : callbacks) {
      callbackPair.second.post(
          () -> callbackPair.first.onPackageAdded(packageName, Process.myUserHandle()));
    }
  }
Fires {@link LauncherApps.Callback#onPackageAdded(String, UserHandle)} on all of the registered
callbacks, with the provided packageName.

@param packageName the package the was added.