title: How to convert a string containing escape characters to a string
body: <p>I have a string that is returned to me which contains escape characters.</p>
  
  <p>Here is a sample string</p>
  
  <blockquote>
    <p>"test\40gmail.com"</p>
  </blockquote>
  
  <p>As you can see it contains escape characters. I need it to be converted to its real value which is </p>
  
  <blockquote>
    <p>"test@gmail.com"</p>
  </blockquote>
  
  <p>How can I do this?</p>