CryptoRepositoryImpl.kt

// for LiveData
override suspend fun getCryptoList(): LiveData<PagingData<CryptoItemResponse>> {
        return Pager(
            config = PagingConfig(
                pageSize = NETWORK_PAGE_SIZE,
                enablePlaceholders = false
            ),
            pagingSourceFactory = {
                CryptoListPagingSource(service, mapper)
            }
        ).liveData
    }

// for Flow
override suspend fun getCryptoList(): Flow<PagingData<CryptoItemResponse>> {
        return Pager(
            config = PagingConfig(
                pageSize = NETWORK_PAGE_SIZE,
                enablePlaceholders = false
            ),
            pagingSourceFactory = {
                CryptoListPagingSource(service, mapper)
            }
        ).flow
    }
    
// for Observable    
override suspend fun getCryptoList(): Observable<PagingData<CryptoItemResponse>> {
        return Pager(
            config = PagingConfig(
                pageSize = NETWORK_PAGE_SIZE,
                enablePlaceholders = false
            ),
            pagingSourceFactory = {
                CryptoListPagingSource(service, mapper)
            }
        ).observable
    }