title: Leaflet routing machine get route summary without drawind route
body: <p>I am using LRM to calculate routes. And I need data about this routes. Now I'm just learning how to exctract this data so I can use it further. 
  I have two routes</p>
  
  <pre><code>var routing1 =  L.Routing.control({
              waypoints: [
                  L.latLng(54.736038, 55.97429),
                  L.latLng(54.736985, 55.980878),
              ],
          });
  
  var routing2 =  L.Routing.control({
              waypoints: [
                  L.latLng(54.732798, 55.969934),
                  L.latLng(54.734954, 55.95809)
              ],
          });
  </code></pre>
  
  <p>I have a button to draw this routes</p>
  
  <pre><code>document.getElementById("drawing").addEventListener("click", myFunction);
          function myFunction() {
              routing1.addTo(map).on('routesfound', function (e) {
                  distance = e.routes[0].summary.totalDistance;
                  console.log('routing1 ' + distance);
              });
              routing2.addTo(map).on('routesfound', function (e) {
                  distance = e.routes[0].summary.totalDistance;
                  console.log('routing2 ' + distance);
              });
          }
  </code></pre>
  
  <p>As I don't quite understand JS yet so I have this question:</p>
  
  <hr>
  
  <p>How can I console.log route's summary the moment route calculated? Without drawing it.</p>