@MarshalsPointer
 public static long toNative(AVLayerVideoGravity o, long flags) {
   if (o == null) {
     return 0L;
   }
   return NSObject.Marshaler.toNative(o.value(), flags);
 }
 @MarshalsPointer
 public static long toNative(List<AVLayerVideoGravity> l, long flags) {
   if (l == null) {
     return 0L;
   }
   NSArray<NSString> array = new NSMutableArray<>();
   for (AVLayerVideoGravity o : l) {
     array.add(o.value());
   }
   return NSObject.Marshaler.toNative(array, flags);
 }
 public static /*<name>*/ AVLayerVideoGravity /*</name>*/ valueOf(
     /*<type>*/ NSString /*</type>*/ value) {
   for (/*<name>*/ AVLayerVideoGravity /*</name>*/ v : values) {
     if (v.value().equals(value)) {
       return v;
     }
   }
   throw new IllegalArgumentException(
       "No constant with value "
           + value
           + " found in "
           + /*<name>*/ AVLayerVideoGravity /*</name>*/.class.getName());
 }