title: Multiple line shown in Matsnackbar in angular
body: <p>For Example:</p>
  
  <pre><code>let msg: test;let msg2 : test3; 
  For Ex: alert(msg + '\n'+ msg2);  
  </code></pre>
  
  <p>First and second line<br>
  <strong>like wise shown the matsnackbar in angular ?</strong>                    </p>