20190125_objc_error.m

---
// BarModel.h
#import <Foundation/Foundation.h>

NS_ASSUME_NONNULL_BEGIN

@interface BarModel : NSMutableDictionary<NSString *, NSString *>

@end

NS_ASSUME_NONNULL_END

---
// BarModel.m
#import "BarModel.h"

@implementation BarModel

@end

---
// FooModel.h
#import <Foundation/Foundation.h>
#import <JSONModel/JSONModel.h>
#import "BarModel.h"

NS_ASSUME_NONNULL_BEGIN

@interface FooModel : JSONModel

@property (nonatomic, strong) BarModel *barModel;
@property (nonatomic, strong) NSMutableDictionary *dict;

@end

NS_ASSUME_NONNULL_END

---
// FooModel.m
#import "FooModel.h"

@implementation FooModel

@end

---
// call
FooModel *fooModel = [[FooModel alloc] init];
fooModel.barModel = [BarModel new];
fooModel.dict = [NSMutableDictionary dictionaryWithDictionary:@{@"k1": @"v1"}];

NSString *json = [fooModel toJSONString];
NSLog(@"json: %@", json);

---
error: 
-[FooModel setBarModel:]: unrecognized selector sent to instance 0x600000070190
2019-01-25 11:20:03.534573+0800 APIGatewayTest[23346:6835067] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[FooModel setBarModel:]: unrecognized selector sent to instance 0x600000070190'
*** First throw call stack:
(
	0   CoreFoundation                      0x00000001036201bb __exceptionPreprocess + 331
	1   libobjc.A.dylib                     0x00000001022a8735 objc_exception_throw + 48
	2   CoreFoundation                      0x000000010363ef44 -[NSObject(NSObject) doesNotRecognizeSelector:] + 132
	3   CoreFoundation                      0x0000000103624ed6 ___forwarding___ + 1446
	4   CoreFoundation                      0x0000000103626da8 _CF_forwarding_prep_0 + 120
	5   APIGatewayTest                      0x0000000100c49dd2 -[ViewController sendRequest:] + 146
	6   UIKitCore                           0x0000000106ec2ecb -[UIApplication sendAction:to:from:forEvent:] + 83
	7   UIKitCore                           0x00000001068fe0bd -[UIControl sendAction:to:forEvent:] + 67
	8   UIKitCore                           0x00000001068fe3da -[UIControl _sendActionsForEvents:withEvent:] + 450
	9   UIKitCore                           0x00000001068fd31e -[UIControl touchesEnded:withEvent:] + 583
	10  UIKitCore                           0x0000000106efe0a4 -[UIWindow _sendTouchesForEvent:] + 2729
	11  UIKitCore                           0x0000000106eff7a0 -[UIWindow sendEvent:] + 4080
	12  UIKitCore                           0x0000000106edd394 -[UIApplication sendEvent:] + 352
	13  UIKitCore                           0x0000000106fb25a9 __dispatchPreprocessedEventFromEventQueue + 3054
	14  UIKitCore                           0x0000000106fb51cb __handleEventQueueInternal + 5948
	15  CoreFoundation                      0x0000000103585721 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
	16  CoreFoundation                      0x0000000103584f93 __CFRunLoopDoSources0 + 243
	17  CoreFoundation                      0x000000010357f63f __CFRunLoopRun + 1263
	18  CoreFoundation                      0x000000010357ee11 CFRunLoopRunSpecific + 625
	19  GraphicsServices                    0x000000010aac81dd GSEventRunModal + 62
	20  UIKitCore                           0x0000000106ec181d UIApplicationMain + 140
	21  APIGatewayTest                      0x0000000100c4aa70 main + 112
	22  libdyld.dylib                       0x00000001033b5575 start + 1
	23  ???                                 0x0000000000000001 0x0 + 1