InvoicesAdapter.kt

class InvoicesDiff : DiffUtil.ItemCallback<Invoice>() {

    override fun areItemsTheSame(oldItem: Invoice, newItem: Invoice): Boolean {
        return oldItem.id == newItem.id
    }

    override fun areContentsTheSame(oldItem: Invoice, newItem: Invoice): Boolean {
        return areItemsTheSame(oldItem, newItem)
    }
}