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Reports <code>if</code> statements with three or more branches that can be replaced with the <code>when</code> expression with a subject.
<p><b>Example:</b></p>
<pre><code>
  fun translateNumber(n: Int): String {
    return if (n == 1) {
      "one"
    } else if (n == 2) {
      "two"
    } else {
      "???"
    }
  }
</code></pre>
<p>The quick-fix converts the <code>if</code> expression to <code>when</code>:</p>
<pre><code>
  fun translateNumber(n: Int): String {
    return when (n) {
     