title: Jetpack Compose - Unresolved reference: observeAsState
body: <p>I'm learning Jetpack Compose and I was trying to make a View Model for my @Composable.</p>
  <p>In documentation (<a href="https://developer.android.com/codelabs/jetpack-compose-state#3" rel="noreferrer">https://developer.android.com/codelabs/jetpack-compose-state#3</a>) for observing state changes in composable they use <code>observeAsState</code> but in my implementation, the method cannot be found. I get instead <code>Unresolved reference: observeAsState</code></p>
  <p>ViewModel</p>
  <pre><code>class MainActivityViewModel : ViewModel() {
      val list: LiveData&lt;MutableList&lt;String&gt;&gt; = MutableLiveData(mutableListOf(&quot;Ana&quot;, &quot;are&quot;, &quot;mere&quot;))
  
      fun addString(item: String) {
          val list: MutableList&lt;String&gt; = list.value!!
          list.add(item)
      }
  
  }
  </code></pre>
  <p>Composable
  <a href="https://i.stack.imgur.com/N0TyM.png" rel="noreferrer"><img src="https://i.stack.imgur.com/N0TyM.png" alt="enter image description here" /></a></p>
  <p>I am using Compose 1.0.0-beta01</p>