Kotlin 的 isNullOrBlank() 函数是否可以导入 xml 以用于数据绑定

Via data-binding I am setting the visibility of a text field. The visibility is depending on a string being null or empty or nothing of the both.

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

    <data>
        <import type="android.view.View"/>

        <variable
            name="viewModel"
            type="com.example.viewModel"/>
    </data>

    <android.support.constraint.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"

        <TextView
            android:id="@+id/textField1"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="@{viewModel.data.text}"
            android:visibility="@{(viewModel.data.text == null || viewModel.data.text.empty) ? View.GONE : View.VISIBLE}"
            app:layout_constraintLeft_toLeftOf="parent"
            app:layout_constraintRight_toRightOf="parent"
            app:layout_constraintTop_toTopOf="parent"
            app:layout_constraintBottom_toBottomOf="parent"/> 

    </android.support.constraint.ConstraintLayout>

Is it possible to create an import in the data element so that I can use the isNullOrBlank() function from the kotlin.text.StringsKt class?

It was hoping to be able to use it like this: android:visibility="@{(viewModel.data.title.isNullOrBlank() ? View.GONE : View.VISIBLE}"