BookmarksViewModel - After adding domain layer

BookmarksViewModel.kt

/* Copyright 2022 Google LLC.	
   SPDX-License-Identifier: Apache-2.0 */
   
 class BookmarksViewModel @Inject constructor(
    getSaveableNewsResources: GetSaveableNewsResourcesUseCase
) : ViewModel() {
    
    val feedState: StateFlow<NewsFeedUiState> = getSaveableNewsResources()
        .map { newsResources -> 
            newsResources.filter(SaveableNewsResource::isSaved) 
        } 
        .map<List<SaveableNewsResource>, NewsFeedUiState>(NewsFeedUiState::Success)
        .onStart { emit(Loading) }
        .stateIn(...)
}