iven lat-lng. A
     MaxZoomEvent.MAXZOOM_SUCCESS will be dispatched, if successful,
     containing the given lat-lng and the maximum zoom level at that point.
     Otherwise MaxZoomEvent.MAXZOOM_FAILURE will be dispatched to indicate
     that a failure has occurred. If opt_targetZoom is set, only zoom levels
     up to opt_targetZoom will be considered.
          Note: this feature is only implemented for satellite imagery, for
     MapType.SATELLITE_MAP_TYPE and MapType.HYBRID_MAP_TYPE.
          </p><s