RelativeContainer里面嵌套另一个RelativeContainer2，RelativeContainer2的子控件的父id是什么？

let AlignRus:Record<string,Record<string,string|VerticalAlign|HorizontalAlign>> = { 
  'top': { 'anchor': '__container__', 'align': VerticalAlign.Top }, 
  'left': { 'anchor': '__container__', 'align': HorizontalAlign.Start } 
} 
let AlignRue:Record<string,Record<string,string|VerticalAlign|HorizontalAlign>> = { 
  'top': { 'anchor': '__container__', 'align': VerticalAlign.Top }, 
  'right': { 'anchor': '__container__', 'align': HorizontalAlign.End } 
} 
let Mleft:Record<string,number> = { 'left': 20 } 
let BWC:Record<string,number|string> = { 'width': 2, 'color': '#6699FF' } 
@Entry 
@Component 
struct PositionPage { 
  build() { 
 
    RelativeContainer() { 
      Row().width(100).height(100) 
        .backgroundColor("#FF3333") 
        .alignRules(AlignRus) 
        .id("row1") 
 
      Row().width(100).height(100) 
        .backgroundColor("#FFCC00") 
        .alignRules(AlignRue) 
        .id("row2") 
 
      RelativeContainer(){ 
        Text('咨询日期') 
          .id('dataText') 
          .width(100) 
          .height(100) 
          .fontSize(12) 
          .backgroundColor(Color.Green) 
          .alignRules({ 
            right:{anchor:'__container__',align:HorizontalAlign.End} 
          }) 
      } 
      .backgroundColor(Color.Pink) 
      .id("subContainer") 
      .alignRules( 
        { 
          top :{anchor:'__container__',align:VerticalAlign.Bottom} 
        } 
      ) 
    } 
    .width(300).height(300) 
    .margin(Mleft) 
    .border(BWC) 
  } 
}