| map | Input map object containing current state of map. |
| baseMapLayerGroupName | Input Specifies the name of the baseMapLayerGroup for which to render the tile. |
| x | Input Specifies the row index of the tile to return. |
| y | Input Specifies the column index of the tile to return. |
| z | Input Specifies the zoom level of the tile to return. |
| dpi | Input Specifies the dpi of the tile to return. |
| tileImageFormat | Input Specifies the image format of the tile to return. |
| tileExtentOffset | Specifies the ratio by which the tile to be rendered should be "buffered out". The tile will be rendered at the specified width multiplied by the given ration, which will be cropped back to the original requested size after rendering. This is to improve label placement on rendered tiles by giving extra "breathing space" to label placement algorithms. |
| retinaScale | The scaling factor to apply for "retina" tiles |