@Override
        public int getItemCount() {
            return mCityList.size();
        }
This is an example of a data bound adapter use case where all items have the same type.
<p>
The parent class handles the item creation and this child class only implements the
bindItem to set values in a type checked way.
DataBindingDataBoundRecyclerView/app/src/main/java/com/example/android/databoundrecyclerview/MainActivity.java