ui/android/java/res/values/ids.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <!-- Dropdown Popup Window -->
    <item type="id" name="dropdown_popup_window" />

    <!-- Model Utils -->
    <item type="id" name="view_model" />
    <item type="id" name="view_type" />
</resources>