EventBus/src/org/greenrobot/eventbus/util/ErrorDialogManager.java
public static void attachTo(Activity activity, boolean finishAfterDialog, Bundle argumentsForErrorDialog) {
        Object executionScope = activity.getClass();
        attachTo(activity, executionScope, finishAfterDialog, argumentsForErrorDialog);
    }
public static void attachTo(Activity activity, boolean finishAfterDialog, Bundle argumentsForErrorDialog) {
        Object executionScope = activity.getClass();
        attachTo(activity, executionScope, finishAfterDialog, argumentsForErrorDialog);
    }
Scope is limited to the activity's class.