set android:textAppearance with DataBinding

I am trying to set android:textAppearance with use of DataBinding , but it is not allowing me to use ?android:attr/textAppearanceLarge with ternary operator.

android:textAppearance="@{position==1 ? ?android:attr/textAppearanceLarge : ?android:attr/textAppearanceMedium}"

It is showing me compile time error <expr> expected, got '?'.

Does there any other way to use this with DataBinding?

You can use android.R.attr package instead of the ?android:attr

<?xml version="1.0" encoding="utf-8"?>
<layout xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:tools="http://schemas.android.com/tools">

    <data>
        <import type="android.R.attr"/>

    </data>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical">

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="hello world"
            android:textAppearance='@{age==1 ? android.R.attr.textAppearanceLarge : android.R.attr.textAppearanceMedium}'
            tools:textAppearance="?android:textAppearanceLarge"
            />


    </LinearLayout>
</layout>