title: Kotlin reflect proguard SmallSortedMap
body: <pre><code>Warning: kotlin.reflect.jvm.internal.KClassImpl: can't find referenced class kotlin.reflect.jvm.internal.KClassImpl$kotlin.reflect.jvm.internal.KClassImpl$Data
  Warning: kotlin.reflect.jvm.internal.KClassImpl: can't find referenced class kotlin.reflect.jvm.internal.KClassImpl$kotlin.reflect.jvm.internal.KClassImpl$Data
  Warning: kotlin.reflect.jvm.internal.KClassImpl$data$1: can't find referenced class kotlin.reflect.jvm.internal.KClassImpl$kotlin.reflect.jvm.internal.KClassImpl$Data
  Warning: kotlin.reflect.jvm.internal.KClassImpl$data$1: can't find referenced class kotlin.reflect.jvm.internal.KClassImpl$kotlin.reflect.jvm.internal.KClassImpl$Data
  Warning: kotlin.reflect.jvm.internal.impl.protobuf.SmallSortedMap: can't find referenced class kotlin.reflect.jvm.internal.impl.protobuf.SmallSortedMap$kotlin.reflect.jvm.internal.impl.protobuf.SmallSortedMap$Entry
  Warning: kotlin.reflect.jvm.internal.impl.protobuf.SmallSortedMap: can't find referenced class kotlin.reflect.jvm.internal.impl.protobuf.SmallSortedMap$kotlin.reflect.jvm.internal.impl.protobuf.SmallSortedMap$EntrySet
  Warning: kotlin.reflect.jvm.internal.impl.protobuf.SmallSortedMap$Entry: can't find referenced class kotlin.reflect.jvm.internal.impl.protobuf.SmallSortedMap$kotlin.reflect.jvm.internal.impl.protobuf.SmallSortedMap$Entry
  Warning: kotlin.reflect.jvm.internal.impl.protobuf.SmallSortedMap$Entry: can't find referenced class kotlin.reflect.jvm.internal.impl.protobuf.SmallSortedMap$kotlin.reflect.jvm.internal.impl.protobuf.SmallSortedMap$Entry
  </code></pre>
  
  <p>I'm getting these warnings which break my release build on the task <code>transformClassesAndResourcesWithProguardForAppRelease</code>.</p>
  
  <p>I know I can just ignore the warnings or inform proguard to not warn by using <code>-dontwarn</code> but I was wondering if anyone else had come across this and had actually found the correct fix.</p>
  
  <p>I'm using Kotlin version <code>1.1.4-2</code></p>