title: Replace all escape sequences with non-escaped equivalent strings in java
body: <p>I have a string like this:</p>
  
  <pre><code>&amp;lt;![CDATA[&amp;lt;ClinicalDocument&amp;gt;rest of CCD here&amp;lt;/ClinicalDocument&amp;gt;]]&amp;gt;
  </code></pre>
  
  <p>I'd like to replace the escape sequences with their non-escaped characters, to end up with:</p>
  
  <pre><code>&lt;![CDATA[&lt;ClinicalDocument&gt;rest of CCD here&lt;/ClinicalDocument&gt;]]&gt;
  </code></pre>