title: Reduce number of conditional operators(4) used in the expression (maximum allowed 3)
body: <p>How can i reduce the complexitiy of my operators? i have a conditional issue. </p>
  
  <pre><code>Object someObject = getSomeObject();
  boolean isNotInstanceOfA = !(someObject instanceof A);
  boolean isNotInstanceOfB = !(someObject instanceof B);
  boolean isNotInstanceOfC = !(someObject instanceof C);
  boolean isNotInstanceOfABC = isNotInstanceOfA &amp;&amp; isNotInstanceOfB &amp;&amp; isNotInstanceOfC;
  if (isNotInstanceOfABC &amp;&amp; (container.getChildren(itemId) == null || container.getChildren(itemId).isEmpty())) {
      return "something";
   }
  </code></pre>