title: drawing a AST tree with antlr and c#
body: <p>i'm studying how it works ANTLR, in this guide
  <a href="https://theantlrguy.atlassian.net/wiki/display/ANTLR4/Getting+Started+with+ANTLR+v4" rel="nofollow noreferrer">https://theantlrguy.atlassian.net/wiki/display/ANTLR4/Getting+Started+with+ANTLR+v4</a></p>
  
  <p>at the end it create a parse tree like this 
  <img src="https://i.stack.imgur.com/51Lfe.png" alt="enter image description here"></p>
  
  <p>(don't matter the tag, the grammar is in italian)
  anyway is there a method in c# with ANTLR4 that could draw a tree like that?
  i really need it </p>
  
  <p>Thank you all!</p>