in AppSearchSample/app/src/main/java/com/android/example/appsearchsample/NoteListItemAdapter.kt [81:86]
override fun areItemsTheSame(oldItem: SearchResult, newItem: SearchResult): Boolean {
val oi = oldItem.genericDocument.toDocumentClass(Note::class.java)
val ni = newItem.genericDocument.toDocumentClass(Note::class.java)
return oi.id === ni.id &&
oi.namespace === ni.namespace
}