Get Object from Class in Parse

HondaParse.m

-(void)getGroupAccessory:(NSString *)groupAccessoryName withCompletion:(void(^)(BOOL success))completion failure:(void(^)(HondaFailureCode failureCode))failure{
    PFQuery *query = [PFQuery queryWithClassName:@"HondaItem"];
    [query whereKey:@"groupAccessary" hasPrefix:@"Điện"];
    [query findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) {
        if (!error) {
            // The find succeeded.
            if ([self convertPFObjectToHondaDataItem:objects].count) {
                completion([self convertPFObjectToHondaDataItem:objects]);
            }
        } else {
            // Log details of the failure
            NSLog(@"Error: %@ %@", error, [error userInfo]);
        }
    }];
}