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Reports local variables of wrapper type that are mostly used as primitive types.
<p>In some cases, boxing can be source of significant performance penalty, especially in loops.</p>
<p>Heuristics are applied to estimate the number of boxing operations. For example, conversions inside loops are considered
  as much more numerous.</p>

<p><b>Example:</b></p>
<pre><code>  public void example() {
    Integer value = 12;
    needBox(value);
    for (int i = 0; i &lt; 10; i++) {
      // Loop usages 