title: Naming of backing properties for protected variable
body: <p>I want to have a <code>protected</code> variable in my base class :</p>
  <pre><code>protected val _networkState = MutableLiveData&lt;NetworkState&gt;()
      val networkState: LiveData&lt;NetworkState&gt;
          get() = _networkState
  </code></pre>
  <p>In order to follow Kotlin guidelines for Naming of backing properties﻿ <code>_networkState</code> should be private. When it is protected, I receive following warning on the variable : <em><strong>property name should start with a lowercase letter</strong></em></p>
  <p>What is the best practice for naming of my <code>protected</code> variable?</p>