mutableCopyWithZone

- (id)mutableCopyWithZone:(NSZone *)zone{
    EmployeeModel *model = [[EmployeeModel allocWithZone:zone] init];
    [[[self class] getPropertyNameList:[model class]] enumerateObjectsUsingBlock:^(id _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) {
        [model setValue:[self valueForKey:obj] forKey:obj];
    }];
    return model;
}

+ (NSArray *)getPropertyNameList:(Class)cls {
    NSMutableArray *propertyNameListArray = [NSMutableArray array];
    unsigned int count = 0;
    objc_property_t *properties = class_copyPropertyList(cls, &count);
    for (NSInteger i = 0 ; i < count; i ++) {
        const char *propertyCharName = property_getName(properties[i]);//c的字符串
        NSString *propertyOCName = [NSString stringWithFormat:@"%s",propertyCharName];//转化成oc 字符串
        [propertyNameListArray addObject:propertyOCName];
    }
    NSArray *dataArray = [NSArray arrayWithArray:propertyNameListArray];
    return dataArray;
}