如何在多个ViewController中使用NSFetchedResultsControllerDelegate而不重复控制器代码？

import UIKit
import CoreData

class BaseFetchedResultsViewController: UIViewController, NSFetchedResultsControllerDelegate {
    
    var fetchedResultsController: NSFetchedResultsController<NSFetchRequestResult>?
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        // 初始化NSFetchedResultsController
        let fetchRequest = NSFetchRequest<NSFetchRequestResult>(entityName: "EntityName")
        let sortDescriptor = NSSortDescriptor(key: "propertyName", ascending: true)
        fetchRequest.sortDescriptors = [sortDescriptor]
        
        let managedObjectContext = CoreDataStack.shared.managedObjectContext
        fetchedResultsController = NSFetchedResultsController(fetchRequest: fetchRequest, managedObjectContext: managedObjectContext, sectionNameKeyPath: nil, cacheName: nil)
        fetchedResultsController?.delegate = self
        
        do {
            try fetchedResultsController?.performFetch()
        } catch {
            print("Fetch error: \(error.localizedDescription)")
        }
    }
    
    // NSFetchedResultsControllerDelegate方法的实现
    func controllerWillChangeContent(_ controller: NSFetchedResultsController<NSFetchRequestResult>) {
        // 在数据变化前执行的操作
    }
    
    func controllerDidChangeContent(_ controller: NSFetchedResultsController<NSFetchRequestResult>) {
        // 在数据变化后执行的操作
    }
    
    // 其他需要使用NSFetchedResultsControllerDelegate的视图控制器可以继承该基类视图控制器，并根据需要重写相关方法
    
}