Why [App Actions Test Tool] not support shortcuts xml file?

I had created App Actions using the Android Shortcuts framework: https://developers.google.com/assistant/app/get-started

shortcuts.xml

<?xml version="1.0" encoding="utf-8"?>
<shortcuts xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    >
    <capability android:name="custom.actions.intent.PLUS_DAYS"
        queryPatterns="@array/PlusQueries">
        <intent
            android:action="android.intent.action.VIEW"
            android:targetPackage="com.noen.maihue.datetimeplus"
            android:targetClass="com.noen.maihue.datetimeplus.MainActivity">
            <parameter
                android:name="day_number"
                android:key="day_number"/>
        </intent>
    </capability>
    <shortcut
        android:shortcutId="Plus_Days"
        android:shortcutShortLabel="@string/PlusDayShort">
        <capability-binding android:key="custom.actions.intent.PLUS_DAYS">
            <parameter-binding
                android:key="day_number"
                android:value="@string/day_number"/>
        </capability-binding>
    </shortcut>
    <!-- Specify more shortcuts here. -->
</shortcuts>

Androidmanifest.xml

<activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
            <meta-data
                android:name="android.app.shortcuts"
                android:resource="@xml/shortcuts" />
        </activity>

But if I create a Preview to test, it occur error:

    App Actions Test Tool v3.5.5
    No Android Module with actions file reference found. You need one Android Module with an actions file reference.
    Create Actions.xml

Why App Actions Test Tool not support shortcuts xml file?

You need do install another Android Studio plugin "Google Assistant", this plugin also contains an "app actions test tool"