The NoDataTileBehavior can be one of:
| Constant | Description | 
|---|---|
Enums. | (0) Show coarser tiles. This is the default for operational layers and basemap base layers. | 
Enums. | (1) Show blank tiles (nothing). This is the default for basemap reference layers. | 
Enums. | (2) Show the tiles with ' | 
Enums. | (-1) Unknown |