// NSString * BMKStringFromMapSize (BMKMapSize size);
 //[DllImport ("__Internal")]
 //[Verify (PlatformInvoke)]
 //static extern NSString BMKStringFromMapSize (BMKMapSize size);
 public static string BMKStringFromMapSize(BMKMapSize size)
 {
     // "{%.1f, %.1f}"
     return($"{{size.width:f1, {size.height:f1}}}");
 }
 // BOOL BMKMapSizeEqualToSize (BMKMapSize size1, BMKMapSize size2);
 //[DllImport ("__Internal")]
 //[Verify (PlatformInvoke)]
 //static extern bool BMKMapSizeEqualToSize (BMKMapSize size1, BMKMapSize size2);
 public static bool BMKMapSizeEqualToSize(BMKMapSize size1, BMKMapSize size2)
 {
     return(size1.width == size2.width && size1.height == size2.height);
 }