preferred
The preferred image format used for tiles of this WMTS layer. If an image format is not specified when creating this layer, then the value is TileImageFormat.Unknown until the layer is loaded.
Since
200.1.0
The preferred image format used for tiles of this WMTS layer. If an image format is not specified when creating this layer, then the value is TileImageFormat.Unknown until the layer is loaded.
200.1.0