title: How to implement floating Snackbar animation in flutter?
body: <p>I'm trying to implement animation in floating Snackbar in which it emerges from the bottom of the screen and moves up, just like the one in Gmail app which emerges on sliding a mail for achive. Could someone please post an example?</p>
  <pre><code>ScaffoldMessenger.of(context).showSnackBar(SnackBar(
                            content: Text(
                              'Product removed from cart',
                            ),
                            action: SnackBarAction(
                                label: 'Undo',
                                onPressed: () {
                                 //
                                }),
                            duration: Duration(seconds: 3),
                            behavior: SnackBarBehavior.floating,
                            margin: EdgeInsets.only(bottom: 30,left: 10,right: 10),
                            animation: // **Answer Please**
                        }
  </code></pre>