prefetchZoomDelta

When loading a map, if PrefetchZoomDelta is set to any number greater than 0, the map will first request a tile for zoom - delta in a attempt to display a full map at lower resolution as quick as possible. It will get clamped at the tile source minimum zoom. The default delta is 4.

fun prefetchZoomDelta(value: Long): ImageSource
fun prefetchZoomDelta(value: Expression): ImageSource