iOS:Bug-isEqual

@implementation Base- (BOOL)isEqual:(id)object {    return [object isKindOfClass:[self class]];}@end@interface Child : Base@endint main(){    NSArray *arrChilds;    Base *b = [[Base alloc] init];    BOOL boo1 = [arrChilds containsObject:b];    for (Child *child in arrChilds) {        boo1 = [child isEqual:b]; ;    }}