title: How to process and join string in thymeleaf
body: <p>I have a list of strings - which are the properties names that I am interested in:
  I want to join the values of these strings, but not using the properties name, but the properties values for them.
  I saw that the starting point is <code>#strings.listJoin</code> - but how can I say to match the elements in the list against their value in the properties files?</p>
  
  <p>The list would be: <code>[name, address]</code> and in the properties file I have:<pre><code>name=stg
  address=another something
  </code></pre>
  I would like to obtain the string: <code>stg, another something</code></p>