title: parsing string in Groovy?
body: <p>I am new to Groovy and I am trying to parse header from my REST service response. 
  The string is below:</p>
  
  <blockquote>
    <p>[http://localhost:4545/third-party-web?code=IVJZw1]</p>
  </blockquote>
  
  <p>I am trying to code <code>IVJZw1</code>.</p>
  
  <p>It is easy and I hope I get help quick.</p>
  
  <p>Azou</p>