HarmonyOS 鸿蒙Next 这段示例代码没有配置route_map为什么能够通过this.stack.pushPath({ name: "page" })跳转页面？

HarmonyOS 鸿蒙Next 这段示例代码没有配置route_map为什么能够通过this.stack.pushPath({ name: “page” })跳转页面？

this.stack.pushPath({ name: “page” }) 这里的“page”是哪个？怎么实现的name设定？

代码如下：

let COLOR1: string = "#80004AAF";
let COLOR2: string = "#802787D9";
let BLUR_STYLE_1: BlurStyle = BlurStyle.BACKGROUND_THIN;
let BLUR_STYLE_2: BlurStyle = BlurStyle.BACKGROUND_THICK;

@Component
struct BackComponent {
  build() {
    Row() {
      Column() {
      }
      .height('100%')
      .backgroundColor("#3D9DB4")
      .layoutWeight(9)

      Column() {
      }
      .height('100%')
      .backgroundColor("#17A98D")
      .layoutWeight(9)

      Column() {
      }
      .height('100%')
      .backgroundColor("#FFC000")
      .layoutWeight(9)
    }
    .height('100%')
    .width('100%')
  }
}

@Component
struct ColorAndBlur {
  @State useColor1: boolean = true;
  @State useBlur1: boolean = true;

  build() {
    NavDestination() {
      Stack({ alignContent: Alignment.Center }) {
        BackComponent()
          .width('100%')
          .height('100%')
        Column() {
          Stack({ alignContent: Alignment.Center }) {
            Button("switch color")
              .onClick(() => {
                this.useColor1 = !this.useColor1;
              })
          }
          .width('100%')
          .layoutWeight(1)

          Stack({ alignContent: Alignment.Center }) {
            Button("switch blur")
              .onClick(() => {
                this.useBlur1 = !this.useBlur1;
              })
          }
          .width('100%')
          .layoutWeight(1)
        }
        .width('100%')
        .height('100%')
      }.width('100%')
      .height('100%')
    }
    .width('100%')
    .height('100%')
    // 开发者可以设置标题栏的背景颜色和背景模糊效果
    .title("switch titlebar color and blur", {
      backgroundColor: this.useColor1 ? COLOR1 : COLOR2,
      backgroundBlurStyle: this.useBlur1 ? BLUR_STYLE_1 : BLUR_STYLE_2,
      barStyle: BarStyle.STACK
    })
  }
}

@Entry
@Component
struct Index {
  private stack: NavPathStack = new NavPathStack();
  @State useColor1: boolean = true;
  @State useBlur1: boolean = true;

  @Builder
  PageBuilder(name: string) {
    ColorAndBlur()
  }

  build() {
    Navigation(this.stack) {
      Stack({ alignContent: Alignment.Center }) {
        BackComponent()
          .width('100%')
          .height('100%')
        Column() {
          Stack({ alignContent: Alignment.Center }) {
            Button("switch color")
              .onClick(() => {
                this.useColor1 = !this.useColor1;
              })
          }
          .width('100%')
          .layoutWeight(1)

          Stack({ alignContent: Alignment.Center }) {
            Button("switch blur")
              .onClick(() => {
                this.useBlur1 = !this.useBlur1;
              })
          }
          .width('100%')
          .layoutWeight(1)

          Stack({ alignContent: Alignment.Center }) {
            Button("push page")
              .onClick(() => {
                this.stack.pushPath({ name: "page" })
              })
          }
          .width('100%')
          .layoutWeight(1)
        }
        .width('100%')
        .height('80%')
      }.width('100%')
      .height('100%')
    }
    .width('100%')
    .height('100%')
    .navDestination(this.PageBuilder)
    // 开发者可以设置标题栏的背景颜色和背景模糊效果
    .title("NavTitle", {
      backgroundColor: this.useColor1 ? COLOR1 : COLOR2,
      backgroundBlurStyle: this.useBlur1 ? BLUR_STYLE_1 : BLUR_STYLE_2,
      barStyle: BarStyle.STACK
    })
    // 开发者可以设置工具栏的背景颜色和背景模糊效果
    .toolbarConfiguration([
      { value: "a" },
      { value: "b" },
      { value: "c" }
    ], {
      backgroundColor: this.useColor1 ? COLOR1 : COLOR2,
      backgroundBlurStyle: this.useBlur1 ? BLUR_STYLE_1 : BLUR_STYLE_2
    })
  }
}

引自：https://developer.huawei.com/consumer/cn/doc/harmonyos-references-V5/ts-basic-components-navigation-V5#%E7%A4%BA%E4%BE%8B5%E8%AE%BE%E7%BD%AE%E8%83%8C%E6%99%AF%E9%A2%9C%E8%89%B2%E5%92%8C%E6%A8%A1%E7%B3%8A%E6%95%88%E6%9E%9C