code: private void parseComment() throws Exception {
          boolean saved = expandPE;
  
          expandPE = false;
          parseUntil(endDelimComment);
          require('>');
          expandPE = saved;
          handler.comment(dataBuffer, 0, dataBufferPos);
          dataBufferPos = 0;
      }
docs: Skip a comment.
  
  <pre>
  [15] Comment ::= '&lt;!--' ((Char - '-') | ('-' (Char - '-')))* &quot;--&gt;&quot;
  </pre>
  
  <p>
  (The <code>&lt;!--</code> has already been read.)