有没有办法在NSArray,NSMutableArray等上强制输入？

@protocol MyArrayProtocol <NSObject>
- (void)addObject:(id)object;
- (id)objectAtIndex:(NSUInteger)index;
@end

@interface MyArray : NSObject <MyArrayProtocol>
@property (nonatomic, strong) NSMutableArray *array;
- (void)addObject:(id)object;
- (id)objectAtIndex:(NSUInteger)index;
@end

@implementation MyArray
- (instancetype)init {
    self = [super init];
    if (self) {
        _array = [NSMutableArray new];
    }
    return self;
}

- (void)addObject:(id)object {
    [_array addObject:object];
}

- (id)objectAtIndex:(NSUInteger)index {
    return [_array objectAtIndex:index];
}
@end

MyArray *array = [MyArray new];
[array addObject:@"Hello"];
id object = [array objectAtIndex:0];