I'm looking at this example https://github.com/android10/Android-CleanArchitecture-Kotlin for me it is interesting because it is based on viewmodel pattern I see it uses livedata, observe... (ok where can I learn about this livedata programming style?) but I would have expected to see the binding like

<TextView android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="@{user.firstName, default=my_default}"/>

where are they in such project? Thanks in advance for your hint!

This example don't use DataBinding library Check this sample project from Google (there are some other in another branches): https://github.com/googlesamples/android-architecture/tree/todo-mvvm-databinding