getMapTile
Retrieves a vector data tile from the map resource. Map tiles are used by clients to render a map. they're addressed using a grid arrangement with an X coordinate, Y coordinate, and Z (zoom) level.
The origin (0, 0) is the top left of the map. Increasing the zoom level by 1 doubles both the X and Y dimensions, so a tile containing data for the entire world at (0/0/0) will be split into 4 tiles at zoom 1 (1/0/0, 1/0/1, 1/1/0, 1/1/1).