title: How to know which specific toastr was clicked?
body: <p>I have successfully shown toast by ngx-toaster.
  By i am showing toaster for various type of notifications as per id and taskcode.</p>
  
  <p>I tried to get tap callback and action callback but did not found anything in return.</p>
  
  <pre><code>onNotificationReceived(res) {
          let key;
              switch (key) {
                  case 1:
                      showSuccessPopup(res.title,res.body);
                      break;
  
                  default:
                      break;
              }
      }
  
  showSuccessPopup(title,body) {
          this.toastr
              .success(title, body, { closeButton: true })
              .onTap.subscribe((action) =&gt; console.log(action))
      }
  </code></pre>
  
  <p>Actual Result: Toast shown</p>
  
  <p>Expected: For which id toast was shown</p>