prefetchPageAmount
fun <PageItem, Context> prefetchPageAmount(initialPage: Int = 0, minimumPageAmount: Int = 2): PageFetchStrategy<Int, PageItem, Context>
fun <Key : Any, PageItem, Context> prefetchPageAmount(initialPage: Key, onNextPage: Context.(key: Key) -> Key?, onPreviousPage: Context.(key: Key) -> Key?, minimumPageAmount: Int = 2): PageFetchStrategy<Key, PageItem, Context>
Strategy that prefetches a fixed number of pages around visible items in both directions.