It's used by [DefaultStoreFactory](https://github.com/aerogear/aerogear-android/blob/master/src/org/jboss/aerogear/android/impl/datamanager/DefaultStoreFactory.java). If developer need create a new Store, implement your own [StoreFactory](https://github.com/aerogear/aerogear-android/blob/master/src/org/jboss/aerogear/android/datamanager/StoreFactory.java) pass it to [DataManager](https://github.com/aerogear/aerogear-android/blob/master/src/org/jboss/aerogear/android/DataManager.java) and be happy