use dataBinding error

[JakeWoki]

• What went wrong: Execution failed for task ':app:compileDebugJavaWithJavac'.

  android.databinding.tool.util.LoggedErrorException: Found data binding errors. / data binding error msg:The expression userInfo.userName() cannot be inverted: Two-way binding cannot resolve a setter for java.lang.String property 'userName' loc:48:37 - 48:53 \ data binding error

@AutoValue
public abstract class UserInfo {

    public abstract String avatar();

    @SerializedName("username")
    public abstract String userName();

    @SerializedName("realname")
    public abstract String realName();

    public static TypeAdapter<UserInfo> typeAdapter(Gson gson) {
        return new AutoValue_UserInfo.GsonTypeAdapter(gson);
    }
}

<?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"
    xmlns:tools="http://schemas.android.com/tools">

    <data>
        <import type="com..model.UserInfo"/>
        <variable name="userInfo" type="UserInfo"/>
    </data>

    <ScrollView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:background="@android:color/white">
        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:orientation="vertical">

            <TextView
                    android:id="@+id/name"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:textColor="@color/titleColor"
                    android:textSize="24sp"
                    android:text="@={userInfo.userName}"/>

        </LinearLayout>
    </ScrollView>

</layout>

can you give som help?

[ZacSweers]

Let's keep the discussion in #129 rather than make new issues