父组件中定义的方法如何传递给子组件

import { router } from '@kit.ArkUI'  
  
@Entry  
@Component  
struct ParentPage {  
  build() {  
    Column() {  
      MyComponent({  
        disText: '我是子组件1', onClickEvent: (): void => {  
          router.pushUrl({ url: 'pages/Index' })  
        }  
      })  
      MyComponent({  
        disText: '我是子组件2', onClickEvent: (): void => {  
          router.pushUrl({ url: 'pages/ImagePage' })  
        }  
      })  
    }  
    .width('100%')  
    .height('100%')  
  }  
}  
  
@Component  
struct MyComponent {  
  @State disText: string = ''  
  onClickEvent?: () => void  
  
  build() {  
    Column() {  
      Text(this.disText)  
        .fontSize(30)  
        .onClick(() => {  
          if (this.onClickEvent !== undefined) {  
            this.onClickEvent()  
          }  
        })  
    }  
  }  
}