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// ResultType: Type for the Resource data
// RequestType: Type for the API response
public abstract class NetworkBoundResource<ResultType, RequestType> {
    @WorkerThread
    protected abstract void saveCallResult(@NonNull RequestType item);
    @MainThread
    protected abstract boolean shouldFetch(@Nullable ResultType data);
    @NonNull @MainThread
    protected abstract LiveData<ResultType> loadFromDb();
    @NonNull @MainThread
    protected abstract LiveData<ApiResponse<RequestType>> createCall();
}