Marks a tile in the cache as being up to date, without changing its data.
For example, a network source might call this function when it gets an HTTP 304 Not Modified response.
the X coordinate of the tile
the Y coordinate of the tile
the zoom level of the tile
See Implementation
Marks a tile in the cache as being up to date, without changing its data.
For example, a network source might call this function when it gets an HTTP 304 Not Modified response.