@implementation RLMFMCGProductForm
+ (NSString *)primaryKey
{
    return @"uuid";
}

@end

RLMRealm *realm = [RLMRealm defaultRealm];
        NSLog(@"}}}}}}}}}}} %@", form.uuid);
        @try {
            [realm beginWriteTransaction];
            form.uuid = @"test";
            [realm addOrUpdateObject:form];  // [realm addOrUpdateObject:employeeInfo];
            [realm commitWriteTransaction];
        }
        @catch (NSException *exception) {
            NSLog(@"exception");
            if ([realm inWriteTransaction]) {
                [realm cancelWriteTransaction];
            }
        }