Crash on LayoutHandler in kotlin

[adammasyk]

There is a problem with LayoutHandlerAdapter. I want to use it in my project, when LastAdapter with Layout is loader I've got KotlinNullPointerException. Here is my code:
LastAdapter(viewModel.conversation, BR.item).layout { item, _ -> when(item) { is ContactItem -> { if (item.isCustomer) { R.layout.item_client } else { R.layout.item_service } } else -> R.layout.item_service } }.into(claimContactRv)

When I use normal LastAdapter (without LayoutHandling) everything works well.

I also run example project and get the same error. I paste it below.

kotlin.KotlinNullPointerException at com.github.nitrico.lastadapter.LastAdapter.onBindViewHolder(LastAdapter.kt:109) at com.github.nitrico.lastadapter.LastAdapter.onBindViewHolder(LastAdapter.kt:27) at android.support.v7.widget.RecyclerView$Adapter.onBindViewHolder(RecyclerView.java:6508) at com.github.nitrico.lastadapter.LastAdapter.onBindViewHolder(LastAdapter.kt:125) at com.github.nitrico.lastadapter.LastAdapter.onBindViewHolder(LastAdapter.kt:27) at android.support.v7.widget.RecyclerView$Adapter.bindViewHolder(RecyclerView.java:6541) at android.support.v7.widget.RecyclerView$Recycler.tryBindViewHolderByDeadline(RecyclerView.java:5484) at android.support.v7.widget.RecyclerView$Recycler.tryGetViewHolderForPositionByDeadline(RecyclerView.java:5750) at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:5589) at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:5585) at android.support.v7.widget.LinearLayoutManager$LayoutState.next(LinearLayoutManager.java:2231) at android.support.v7.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1558) at android.support.v7.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1518) at android.support.v7.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:610) at android.support.v7.widget.RecyclerView.dispatchLayoutStep2(RecyclerView.java:3719) at android.support.v7.widget.RecyclerView.dispatchLayout(RecyclerView.java:3436) at android.support.v7.widget.RecyclerView.onLayout(RecyclerView.java:3988) at android.view.View.layout(View.java:16630) at android.view.ViewGroup.layout(ViewGroup.java:5437) at android.support.constraint.ConstraintLayout.onLayout(ConstraintLayout.java:1197) at android.view.View.layout(View.java:16630) at android.view.ViewGroup.layout(ViewGroup.java:5437) at android.support.v4.view.ViewPager.onLayout(ViewPager.java:1769) at android.view.View.layout(View.java:16630) at android.view.ViewGroup.layout(ViewGroup.java:5437) at android.support.constraint.ConstraintLayout.onLayout(ConstraintLayout.java:1197) at android.view.View.layout(View.java:16630) at android.view.ViewGroup.layout(ViewGroup.java:5437) at android.widget.FrameLayout.layoutChildren(FrameLayout.java:336) at android.widget.FrameLayout.onLayout(FrameLayout.java:273) at android.view.View.layout(View.java:16630) at android.view.ViewGroup.layout(ViewGroup.java:5437) at android.support.v7.widget.ActionBarOverlayLayout.onLayout(ActionBarOverlayLayout.java:443) at android.view.View.layout(View.java:16630) at android.view.ViewGroup.layout(ViewGroup.java:5437) at android.widget.FrameLayout.layoutChildren(FrameLayout.java:336) at android.widget.FrameLayout.onLayout(FrameLayout.java:273) at android.view.View.layout(View.java:16630) at android.view.ViewGroup.layout(ViewGroup.java:5437) at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1743) at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1586) at android.widget.LinearLayout.onLayout(LinearLayout.java:1495) at android.view.View.layout(View.java:16630) at android.view.ViewGroup.layout(ViewGroup.java:5437) at android.widget.FrameLayout.layoutChildren(FrameLayout.java:336) at android.widget.FrameLayout.onLayout(FrameLayout.java:273) at com.android.internal.policy.PhoneWindow$DecorView.onLayout(PhoneWindow.java:2678) at android.view.View.layout(View.java:16630) at android.view.ViewGroup.layout(ViewGroup.java:5437) at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2171) at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1931) at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1107) at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6013) at android.view.Choreographer$CallbackRecord.run(Choreographer.java:858) at android.view.Choreographer.doCallbacks(Choreographer.java:670) at android.view.Choreographer.doFrame(Choreographer.java:606)

[scaredChatsky]

It works

LastAdapter(it!!, BR.item)
                            .handler(object : TypeHandler {
                                override fun getItemType(item: Any, position: Int): BaseType? =
                                        if (item is Comment && item.isAnswer) BaseType(R.layout.answer_block, BR.item)
                                        else BaseType(R.layout.question_block, BR.item)
                            })
                            .into(messages)