title: iText7 adding SVG into PdfDocument and possible issues
body: <p>Regarding the answer of the question: <strong>How to add an SVG to a PDF using iText7</strong></p>
  
  <p>Here is a link <a href="https://stackoverflow.com/questions/50059456/how-to-add-an-svg-to-a-pdf-using-itext7/50059861#50059861">click here
  </a>! </p>
  
  <p>When I used the <strong>Sample java code</strong>, it came an error. </p>
  
  <p><strong>ERROR:</strong> 
      com.itextpdf.styledxmlparser.node.impl.jsoup.JsoupXmlParser - Could not map node type: class com.itextpdf.styledxmlparser.jsoup.nodes.XmlDeclaration</p>
  
  <p>What might be the reason that causes the error? How can avoid it?</p>
  
  <p><strong>Dependencies:</strong></p>
  
  <pre><code>dependencies {
    compile 'com.itextpdf:kernel:7.1.2'
    compile 'com.itextpdf:io:7.1.2'
    compile 'com.itextpdf:layout:7.1.2'
    compile 'com.itextpdf:forms:7.1.2'
    compile 'com.itextpdf:pdfa:7.1.2'
    compile 'com.itextpdf:pdftest:7.1.2'
    compile 'com.itextpdf:svg:7.1.2'
    //-- pdfHTML --
    compile 'com.itextpdf:html2pdf:1.0.0'
    //-- Kerning --
    compile 'com.itextpdf:typography:1.0.0'
    //-- iText 7 License Key Library --
    compile 'com.itextpdf:itext-licensekey:2.0.3'
  }
  </code></pre>
  
  <p><strong>Sample java code:</strong></p>
  
  <pre><code>PdfDocument doc = new PdfDocument(
  new PdfWriter(new FileOutputStream(new File(".../test.pdf")),new WriterProperties().setCompressionLevel(0)));
  doc.addNewPage();
  
  URL svgUrl = null;
  svgPath = ".../test.svg";
  
  try{
      svgUrl = new URL(svgPath);
  }
  catch(MalformedURLException mue){...}
  
  if(svgUrl == null){
      try{
          svgUrl = new File(svgPath).toURI().toURL();
      }
      catch(Throwable th){...}
  }
  
  SvgConverter.drawOnDocument(svgUrl.openStream(), doc, 1);
  doc.close();
  </code></pre>
  
  <p><strong>SVG Code:</strong> </p>
  
  <pre><code>&lt;svg x="0px" y="0px" width="1112.53" height="793.73" preserveAspectRatio="xMidYMid" font-size="0" id="vda25_1" xml="http://www.w3.org/XML/1998/namespace" enable-background="new 0 0 300 841.9" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xml="http://www.w3.org/XML/1998/namespace" version="1.1" &gt;
    &lt;g&gt;
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    &lt;/g&gt;
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  </code></pre>