title: Extract comments of specific annotation of a PDF using iText
body: <p>using iText I am able to get a list of annotations of a PDF. It seems that even replies are annotations themselves.</p>
  
  <p>Extracting them, I look at the contents of the PdfDictionary using this</p>
  
  <pre><code>Set&lt;PdfName&gt; keys = annot.getKeys();
  for (PdfName key : keys) {
      System.out.println(key + "," + dictionary.get(key));
  }
  </code></pre>
  
  <p>However, I cannot pinpoint which PdfName I need to use in order to identify replies belong to that certain annotation.</p>