@interface MyModel : JOBIBaseModel

@property (nonatomic, strong) NSString * urlString;

-(NSURL *)getUrl;

@end

@implementation MyModel

-(NSURL *)getUrl{
    return [NSURL URLWithString:self.urlString];
}

@end

NSURL *url=Obj.getUrl;

@class MyArrayModel;
RLM_ARRAY_TYPE(MyArrayModel);
@interface MyModel : JOBIBaseModel
@property (nonatomic, strong) RLMArray <MyArrayModel> * strings;
@end

@implementation MyModel
-(NSURL *)getUrl{
    return [NSURL URLWithString:self.urlString];
}
@end

@interface MyArrayModel : JOBIBaseModel

@property (nonatomic, strong) NSString * urlString;
-(NSURL *)getUrl;

@end

@implementation MyArrayModel
-(NSURL *)getUrl{
    return [NSURL URLWithString:self.urlString];
}
@end