portalItem

The task's portal item which must be of type com.arcgismaps.portal.PortalItemType.VectorTileService. This property can only be set when the task is load status com.arcgismaps.LoadStatus.NotLoaded or com.arcgismaps.LoadStatus.FailedToLoad If the portal item is not of type com.arcgismaps.portal.PortalItemType.VectorTileService the task will fail to load. A vector tile service can be referenced by an item in a portal of type com.arcgismaps.portal.PortalItemType.VectorTileService. This item can also contain custom style resources see ExportVectorTilesTask.hasStyleResources which can be exported as ItemResourceCache.