title: Condition not Satisfied at Groovy
body: <p>have a problem here, and I'm really tired of try to find an solution...</p>
  
  <p>Every time I use this:</p>
  
  <pre><code>Map&lt;Object, Object2&gt; comparisonMap = new HashMap&lt;&gt;()
  comparisonMap.put(object, object2)
  </code></pre>
  
  <p>I receive an error message like this:</p>
  
  <pre><code>Condition not satisfied:
  
  comparisonMap.put(object, object2)
  |             |   |       |
  |             |   object  object2
  |             null
  [object:object2]
  </code></pre>
  
  <p>And I'm really stuck at this. Can someone help me to figure out a solution?</p>