title: Propertly would not be serialize into a Parcel in Kotlin
body: <p>I wish to have my variables <strong>that are not</strong> from my constructor, part of my Parcelable.
  However, I face this warning "Propertly would not be serialize into a Parcel", that inform me I can't do that currently.</p>
  
  <p>I am using Kotlin in <em>experimental</em> v.1.2.41.</p>
  
  <p>How can I do ? </p>
  
  <pre><code>@Parcelize
  data class MyClass(private val myList: List&lt;Stuff&gt;) : Parcelable {
  
      val average: List&lt;DayStat&gt; by lazy {
          calculateAverage(myList)
      }
  </code></pre>