implementation abstract adapter recyclerView by databinding android in kotlin

AdapterX.kt

import android.annotation.SuppressLint
import android.view.LayoutInflater
import android.view.ViewGroup
import androidx.annotation.LayoutRes
import androidx.databinding.DataBindingUtil
import androidx.databinding.ViewDataBinding
import androidx.recyclerview.widget.RecyclerView
import com.kcd.karchidari.BR
import timber.log.Timber
import java.util.*

abstract class AdapterX<T : ViewDataBinding, G : Any>(
    @LayoutRes private val layoutResId: Int,
    private val callback: EventListener<G>? = null,
//    private val callback: (G) -> Unit,
) : RecyclerView.Adapter<AdapterX<T, G>.ViewHolderX>() {

    protected var items: List<G> = ArrayList<G>()
    private var _binding: T? = null
    protected val binding: T get() = _binding!!

    open fun T.initialize(item: G, position: Int) {}
    open fun T.initialize(item: G, callback: EventListener<G>?) {}

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolderX {
        val inflater = LayoutInflater.from(parent.context)
        _binding = DataBindingUtil.inflate(inflater, layoutResId, parent, false)
//        _binding?.lifecycleOwner = parent.findViewTreeLifecycleOwner()
        return ViewHolderX(binding)
    }

    override fun onBindViewHolder(holder: ViewHolderX, position: Int) = holder.bind(items[position], callback)

    override fun getItemCount(): Int = items.size

    inner class ViewHolderX(private val binding: T) : RecyclerView.ViewHolder(binding.root) {
        fun bind(item: G, callback: EventListener<G>?) {
            try {
                binding.setVariable(BR.item, item)
                binding.setVariable(BR.callback, callback)
            } catch (e: Exception) {
                Timber.e("must be define variable in layout by name=item ,callback  \n $e")
            }
            binding.initialize(item, adapterPosition)
            binding.initialize(item, callback)
            binding.executePendingBindings()
        }
    }

    @SuppressLint("NotifyDataSetChanged")
    fun updateItems(items: List<G>?) {
        this.items = items ?: emptyList()
        notifyDataSetChanged()
    }

    interface EventListener<G> {
        fun onClickItem(item: G) {}
        fun onLongClickItem(item: G): Boolean = false
    }
}