getMaxCachedTiles

Returns tile cache size limit (in tiles).

The actual number of cached tiles will be the maximum of this value and the number of tiles that is required to cover the range returned by extendRangeInto.

For example, if this method returns 10, and the most recent call to extendRangeInto returned {100, 179}, and the tile size is 5, then the maximum number of cached tiles will be 16.

However, if the tile size is 20, then the maximum number of cached tiles will be 10.

The default implementation returns 10.

Return

Maximum cache size.