gistfile1.m

- (ARCellData *)cellProject {
    [self.tableView registerClass:[UITableViewCell class] forCellReuseIdentifier:NSStringFromClass([UITableViewCell class])];
    ARCellData *cellData = [[ARCellData alloc] initWithIdentifier:NSStringFromClass([UITableViewCell class])];
    [cellData setCellConfigurationBlock:^(UITableViewCell *cell) { 
        //[cell setStyle:UITableViewCellStyleValue1];
        cell.textLabel.text = @"Project";
        cell.detailTextLabel.text = self.task[@"project"];
    }];
    return cellData;
}

... and internally ARGenricTableViewController



- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    ARCellData *cellData = [self.tableViewData cellDataAtIndexPath:indexPath];
    
    NSString *CellIdentifier = cellData.identifier;
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (!cell) {
        Class TableViewClass = self.tableViewCellClassDict[CellIdentifier];
        cell = [[TableViewClass alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
    }

    // Configure the cell...
    if (cellData.cellConfigurationBlock) {
        cellData.cellConfigurationBlock(cell);
    }
    
    return cell;
}

ARCellData *cellData = [[ARCellData alloc] initWithIdentifier:NSStringFromClass([UITableViewCell class]) andWithStyle:.....];