举个例子

<property key="activeKey" type="attribute" required="false">
  <caption>活动tab页</caption>
  <description></description>
  <attributeTypes>
    <attributeType name="String" />
  </attributeTypes>
</property>

会生成如下typing

export interface TabsContainerProps {
    name: string;
    class: string;
    style?: CSSProperties;
    tabIndex?: number;
    activeKey?: EditableValue<string>;
    tabs: TabsType[];
    customHeader: boolean;
    centered: boolean;
    tabPosition: TabPositionEnum;
}

props.activeKey.status变成available时，你就可以拿到最新的值props.activeKey.value了