Layer Load Monitoring Example

Demonstrate a method for monitoring tile loading performance.

Events Log:
(3:59:31) WMS Buffer 0: Load Start
(3:59:31) WMS Buffer 0: Tile loaded. 3 left.
(3:59:31) WMS Buffer 0: Tile loaded. 2 left.
(3:59:31) WMS Buffer 0: Tile loaded. 1 left.
(3:59:31) WMS Buffer 0: Tile loaded. 0 left.
(3:59:31) WMS Buffer 0: Load End. Grid:4x1