return value for RealmHelper.executeTransactionForRead

[YusukeIwaki]

I want to use some value in RealmTransaction out of the transaction, for example...

User user = RealmHelper.executeTransactionForRead(realm ->  realm.where(User.class).equalsTo("id", 1));

Log.d(TAG, user.getName()); // user is already detatched from Realm here.