使用NSRuleEditor显示保存的条件时遇到问题

import Cocoa

class ViewController: NSViewController, NSRuleEditorDelegate {
    @IBOutlet weak var ruleEditor: NSRuleEditor!

    override func viewDidLoad() {
        super.viewDidLoad()
        ruleEditor.delegate = self
        loadConditions()
    }

    func loadConditions() {
        // 假设 conditions 是从某个地方加载的条件数组
        let conditions = [/* 加载的条件 */]
        ruleEditor.reloadData()
        ruleEditor.setCriteria(conditions, forRowType: .compound)
    }

    // 实现必要的委托方法
    func ruleEditor(_ editor: NSRuleEditor, numberOfChildrenForCriterion criterion: NSRuleEditorCriterion, withRowType rowType: NSTableView.RowType) -> Int {
        // 返回子条件的数量
    }

    func ruleEditor(_ editor: NSRuleEditor, childForCriterion criterion: NSRuleEditorCriterion, withRowType rowType: NSTableView.RowType) -> NSRuleEditorCriterion? {
        // 返回子条件
    }
}